O’Brien Coin Guide: Introduction to the Hiberno-Norse Coinages of the Late 10th & Early 11th C


The first locally produced Irish coinage was the so-called Hiberno-Norse coinage which was first minted in Dublin in about 995-7 AD under the authority of Sihtric III (aka Sihtric Silkenbeard), the Norse King of Dublin.  There is no evidence for the native Irish producing coins before this, so it is likely that their economy was not coin-based.  The Brehon Laws give examples of payments and compensation via services, indenture and/or property but they do not mention units of currency for economic transactions.

Historical evidence (from the annals) for native Irish and contemporary Viking  ‘forms of payment’ include the following :-

  • Book of Clonmacnoise
    • the ‘Borohua’ or cow-tribute (similar to modern day protection money, i.e. you paid, the native Irish didn’t raid)
    • Brian Boru (Bóroimhe) was known as ‘Brian of the Tributes’
  • Annals of Ulster
    • hostage tribute, i.e. a ransom in silver (by Niall) in 964 AD
    • ransom of 1,200 cows + 120 Welsh horses + sixty ounces of gold + the sword of Carlus (by Sihtric) for ‘hostages’ in 1029 AD
    • an additional payment of sixty ounces of pure silver + 80 cows (by Sihtric) for ‘peace’ in 1029 AD
  • Grágás (Icelandic law code)
    • An “ounce”, or eyrir (pl. aurar) measured slightly more than 27 grams, nearly 1 oz. avoirdupois (28.35 grams)
    • An “ôrtug“, or pennyweight. or penny weighed of silver was one-thirtieth of an ounce (0.9 gram)
      • One penny weighed was worth two “pennies counted”, i.e., two of the “penny” coins normally current
      • This allowed tax collectors and their kings to manipulate the currency, i.e. double their money
        • The term mork brenda means ‘pure silver’ whereas the term gangs silfr means ‘counted coins’
        • This 2:1 ratio in the 11th C AD shifted towards 5:1 by the end of the 13th C as rulers profited from currency
  • Bandamanna Saga (events in Iceland c. 1055 AD)
    • According to Egil ‘hack silver’ is suitable for legal compensation “only for poor people because one can only use it to buy the shabbiest of things”
    • It is evident from Egil’s speech that “fragmented coins and hack silver (as a means of payment) were not suitable for powerful cheiftains

Why were Viking coins produced ?

The Vikings were raiders and traders – and the latter needed units of ‘acceptable’ currency for the latter. They traded with many different tribes and cultures, some of which had coins, e.g. the Arabic dirham was widely traded at the time, as were the Anglo-Saxon and Carolingian pennies.

A problem arose with these ‘foreign’ coins insofar as the Arabic dirhams fluctuated from 95% silver (before 950 AD) to around 60% silver by the end of the 10th C (Steuer, 2002, 154-55).  On the other hand, German and English coins remained stable at approx. 90% silver (Steuer 2002, 146; Zwicker et al. 1991).  Hack silver in the form of foreign coins was difficult to value, and the hack silver itself was of such different shapes, sizes and weights, it was also difficult to value.

  • producing a ‘national’ currency with a stable silver content was desirable from both ‘quality and trust’ viewpoints
  • controlling the ‘exchange rate’ of a national currency was highly profitable
  • appearing on a national currency was ‘prestigious’ from a power and influence viewpoint

How did the Vikings progress from a ‘bullion’ economy to a domestic ‘coin-based’ economy?

Two main theories currently prevail:

a) The ‘linear’ model for Viking‐age economies whereby the status economy is replaced by a bullion economy, and then a coin‐based economy, with some overlap in each transition.

hiberno-norse, viking. coins, silver, status,

A linear model for Viking‐age economies

This linear model for the development of Viking-age economies proposes that:

  • At first a status economy exists in a Viking society, in which ‘high value’ ornaments such as neck rings and arm rings, and perhaps brooches or other jewellery, are used as decorative objects as well as the storage and display of wealth.
  • This is followed by the transition to a bullion economy in which these ornamental objects are replaced by weight-adjusted ornaments such as ‘Permian’ rings which are decorative items made to a set weight, or series of set weights, which meant that not only were these status objects ‘wearable’ and a ‘store of wealth’, but also that this store of wealth was ‘standardised’ and the owner / wearer of the rings knew the exact value of their ornaments.
    • The use of ingots is seen as the next stage in this development as they are standardised weights with specific values of metal but lack the ornamental function of ‘high status’ jewellery or ornamental items.
    • The bullion economy is identified by the presence of ‘hack silver’ which can be made from cut ornaments, cut ingots or cut coins and/or foreign coins.
    • It is the use of cut coins as ‘hack silver’ which heralds the start of a transitional phase towards a domestic coin-based economy.
    • This is followed by the use of coins which were not produced by the Viking-age society using them, which have been classified here as foreign coins.
    • In the transitional phase both cut and foreign coins are often tested to judge their silver quality and fineness. This testing can take the form of pecking, bending or edge-nicking – all of which allow the buyer to assess their worth.
  • Finally, the leaders in the Viking society realise the benefits of a coin-based economy and begin to produce their own domestic currency in the form of coins, which will be used by the general population within that society.
    • If these locally-produced coins are to be traded internationally, they need to be similar in value, weight and metal content to their foreign contemporaries.
    • If these locally-produced coins are to be readily accepted by foreign traders, they also need to be similar in design to their foreign contemporaries
    • As domestic and overseas ‘trust’ develops, local design variances can occur – eventually a distinctive local coinage develops.  This results in an increase in economic power or economic influence of the issuer.
    • Local authorities (rulers) can then embellish their coins with their own designs – provided the value, weight and metal content remains constant.  Failure to do so will result in their coins becoming less desirable (lower value) in the eyes of overseas traders.

b) The ‘simultaneous’ model for Viking‐age economies, in which different economies co-exist and are used for different social and economic functions, with some overlap in these functions.

hiberno-norse, viking, coin, status

A simultaneous model for Viking‐age economies

This model does not represent a linear development from a status to a coin-based economy.  As with the linear model, finds of ornaments such as arm rings or neck rings show the presence of a status economy.

  • However, where the presence of ingots and ‘Permian’ rings or other weight-adjusted ornaments was seen in the linear model as evidence for the transition from the status to the bullion economy, here these objects represent the intersection of the two types of economy at the same time.
  • In the simultaneous model, all three economic spheres exist together, but the different types of money found in hoards or as single finds represent the different uses of money for different types of goods and services, rather than a chronological difference.

Why were Viking coins produced in Dublin ?

The Vikings were already producing silver coins in their other Scandinavian colonies such as York, so perhaps the need for money as a means of doing business (trade) with neighbouring Anglo-Saxon kingdoms was a good reason for doing so.  Since many of the Viking kings of York were also kings of Dublin, it was inevitable that Dublin would eventually produce its own coinage in order to grow via overseas trade.  Anglo-Scandinavian coins were also being produced in Sweden and Denmark, presumably also to facilitate trade with the Anglo-Saxons – or was it just an emotive connection to the danegeld formerly paid by the English to halt Viking raids on their kingdoms.

  • These Early Hiberno-Norse coins were good copies of the English pennies of the period (typically of Aethelred II 979-1016 AD).
  • They were not ‘contemporary’ forgeries – the coins of Aethelred were widely recognised throughout Northwestern Europe at the time because of the Viking expansion.  Sihtric’s moneyers used these designs to ensure their coins were similarly recognized but, most importantly, the coins were properly signed as coming from Dublin under Sihtric’s authority.
  • After the battle of Clontarf in 1014 Ireland became more isolated from the rest of the regional Viking community and there was a reduced requirement for money as it was the Norse settlers who were the principal traders and made most use of coined money.

The three Dublin hoards of the earlier 990s have brought a dramatic revelation that there already existed an effective coin economy based on imported Anglo-Saxon coins.  This helps one understand how Sihtric ‘Silkbeard’ could introduce so effectively a new currency based on his own local coinage.

  • It was an ambitious project, which seems to have worked well initially
  • His Crux type, within a very short time, appears to have replaced foreign coins circulating in Dublin
  • With the change of type in England, Sihtric decided to follow suit, and to remint the Crux type with his own version of the Long Cross type.
    • This seems to have been effective, to judge from the scarcity of Dublin Crux coins in Scandinavia and elsewhere.
    • However, the following three issues of Phase I were not struck on the same scale, and they may not have accomplished a renewal of the earlier currency, if indeed that was their goal.
  • The initiatives introducing Phase II in c. 1018 and Phase III in c. 1035 likewise were radical reforms, driven by a desire to raise the weight standard for the coins, to enforce a managed coin economy excluding foreign coins, and to provide a distinctive national identity for the coinage.
    • It was a departure from the pre-existing Anglo-Saxon system – a major trading partner

What happened after Sihtric?

The Hiberno-Norse coinage quickly degraded to crude copies of the ‘long cross’ type of Aethelred and by about 1030 AD they contain minimal legends of vertical strokes instead of letters.  During the following 100 years the coins became increasingly crude though for the most part still recognisably inheriting their design from the ‘long cross’ coinage.

It should also be remembered that in 1066, the Normans invaded England and quickly displaced all local chieftains with local feudal lords who were given ownership of the land and peasants within its boundaries – provided they could keep it by force of arms !

  • The strategy of this new type of feudal lord was to eliminate the previous lord (and his family/followers) but keep the peasants to do the work + pay him taxes for his protection (no change for the peasants).  He, in turn, paid homage to his overlord (the King) and provided men and equipment for military service if called upon to do so.
  • This had a major impact on Viking farmers and Viking merchants/traders throughout England and would have also impacted on the Irish Vikings in terms of overseas trade.
  • By the time the Cambro-Normans came to Ireland, the Vikings had been somewhat cut off from their continental cousins and the Viking towns of Northern England had been changed utterly by Norman feudal system.
  • It is inevitable that this would have a knock-on effect on the Hiberno-Norse who had already been in decline since the Battle of Clontarf in 1014.
    • By the Early 1100s the coins were either double or single sided bracteates (thin coins where the design on one side appears in reverse on the other).
    • It is difficult to see how the later Hiberno-Norse coins could have really been used as coins given how thin and brittle they are – so it is reasonable to suppose that as the coinage degraded its use become increasingly limited.
    • A decade or two before the Cambro-Normans invasion of Ireland (1169-1170) production had all but ceased – probably by about 1130-1150.

From a numismatic point of view, Hiberno-Norse coinage is divided into 7 phases.

  • These phases are chronological and are based on the style of the coinage.
  • Some of the phases and some individual coin types can be dated quite accurately, but most of the coinage can only be dated approximately.
  • The date range and confidence in the dating becomes poorer as the coinage progresses.
  • Individual first phase coins can usually be dated with some confidence to a six year production period – whereas the final seventh phase coins can only be loosely dated to an approximate twenty year period.

Phase I – Contemporary Copies of English Anglo Saxon Pennies

The Earliest coinage of Ireland comprises an issue of silver pennies under the authority of Sihtric III (a.k.a. Sihtric Silkenbeard) King of Dublin.  These pennies follow the style of the contemporary pennies of Aethelred II of England, which changed their design every six years or so.

  • The Irish coins are made of good silver and are usually signed in Sihtric’s name and by a Dublin Moneyer so this is not an attempt at forgery but instead it is a pragmatic approach to produce coins with designs that would be widely acceptable throughout the Viking world.
  • Early Hiberno Norse coins generally turn up in high grades – the average grade is Very Fine (VF) or better
    • this suggests that they were not heavily circulated (handled), i.e. not for ‘every day’ use
  • Peck marks’ occur on many coins of Phase I and there have been a number of attempts to explain them – the two most popular being :-
    • the result of a sharp implement being used to pry the coin from the die after striking.
    • the result of tests to check that the coin is not a lead copy
      • lead, or soft alloys of lead, were the only metals readily available for counterfeiters at that time

There are five main classes of coins in the Hiberno-Norse, Phase I series

Phase I can be further divided into the following :-

Class A          996-1001         Crux issue (King Aethelred II)

Class B        1002-1008         Long Cross issue (King Aethelred II)

Class C        1009-1011         Helmet issue (King Aethelred II)

Class D        1011-1016         Small Cross issue (King Aethelred II)

Class E        1017-1023         Quatrefoil issue (King Cnut)

Class F        1024-1030        Pointed Helmet issue (King Cnut) in the name of Sihtric – none known

Class ?         1024-1030        Pointed Helmet issue (King Cnut) in the name of Anlaf Sihtricsson – one recently found !

Sihtric III died in 1029 and was succeeded by his son Anlaf Sihtricsson. There is a recently discovered coin (of very good quality) that is in the style of Cnut’s “Pointed Helmet” issue (1024-1030) that carries the name Anlaf and does appear to be a late Phase I Hiberno-Norse coin.

The discovery of this coin presents Irish numismatics with few chronological and classification problems, specifically

  1. it is very late, i.e. there are no surviving pieces of Cnut’s other types in Sithric’s name
  2. it appears to clash with the generally accepted dates for Phase II of the Hiberno-Norse series
  3. this coin seems to suggest that there was a fairly significant gap between the Phase I issues and the Phase II issues
  4. there is now an increased level of expectation that other Cnut styles may be discovered with Sithric’s name
  5. there is now an increased level of expectation that further pieces with Anlaf’s name may be discovered

The late Mark Blackburn suggested that some of the Hiberno-Norse coins of the later Phase I types were made in Anglo-Saxon mints on behalf of the Dublin authorities, which would be likely explanation of how the later Phase I pieces are from such well executed dies.

  • It may even be that this “Anlaf piece” is from some very small ‘prestige’ issue which was executed (perhaps in Chester) while the normal output of the Dublin mint was in Phase II and in the now deceased Sithric’s name
  • If it was a ‘prestige’ piece, then no interim Cnut types will be likely be found and the current chronology can remain intact. Future finds (or lack thereof) will tell.

Phase II – Later Long Cross Penny Imitations

Following the end of minting of coins in direct imitation of the contemporary English issue, the mint in Dublin appears to have reverted to minting coins in imitation of the Long Cross issue of Aethelred II in about 1020 AD.

Hiberno-Norse, Sihtric III Anlafsson Penny, Dublin (Dyfli), Phase II coinage, c. 1018 - 1035, moneyer, Faeremin, nicely toned

Hiberno-Norse, Sihtric III Anlafsson Penny, Dublin (Dyfli), Phase II coinage, c. 1018 – 1035, moneyer, Faeremin, nicely toned

  • The Long Cross type was originally issued between about 1002 and 1008 AD with additional symbols such as pellets, or symbols which have only the appearance of lettering.

Phase III – Long Cross and Hands issues

This is the most common type of Hiberno-Norse coinage and is often seen at auction and in dealers’ inventories.  The Dublin Vikings were in decline after the Battle of Clontarf and, by 1035 AD, the coinage minted in Dublin had degraded to a point where it is likely that it was only being produced for internal use within Ireland as it had fallen below the standards used in any neighbouring regions.

Phase III, Penny, bust left, two pellets in front of mouth, rev. long voided cross with hand in two quarters

Phase III, Penny, bust left, two pellets in front of mouth, rev. long voided cross with hand in two quarters

  • The coins are smaller and of poorer quality silver, they have legends made up of strokes and symbols rather than lettering, the symbol of the human hand appears on many coins in one or more commonly two quarters of the reverse cross.
    • The native Irish had no culture of coinage and their experience with the brief earlier issues was clearly insufficient to enable them to continue minting to a high standard following the transfer of power from the Dublin Vikings to the native Irish chieftains and High kings.
    • This phase of Hiberno Norse coinage continued until about 1060 AD.

Phase IV – Scratched Die Issues

The so-called ‘scratched die’ coins of Phase IV comprise a small group that could have been included with the following phase.

  • The coins exhibit one common characteristic insofar as they have a cross apparently scratched into one quarter of the reverse die.

Hiberno-Norse, Phase IV Long Cross type and Phase IV Facing Bust type

  • The two basic designs are derived from the long cross type of Aethelred and from an as yet ‘untraced’ facing bust type.
    • The long cross type is similar to ‘late’ phase III and many Phase V coins – but it is a distinct type nevertheless.
    • The facing bust type is unique to this phase and is easily identifiable as a distinct obverse type.

Phase V – Crude Imitative Issues

The fifth phase of Hiberno-Norse coins is really a bit of a “dumping ground” for an extensive series of pennies which vary widely in design and which by their general style, production quality and weight appear to have been produced in a period of approximately 40 years between 1060 and 1100 AD.

Hiberno-Norse Penny, Dublin, Phase V, Facing bust + birds type - unusually well-struck, nicely toned and of the utmost rarity

Hiberno-Norse Penny, Dublin, Phase V, Facing bust + birds type – unusually well-struck, nicely toned and of the utmost rarity

Hiberno-Norse Kings of Dublin, Phase V, Penny (c 1065-1095), stylized head ultimately derived from the Long Cross type of Aethelred II left

Hiberno-Norse Kings of Dublin, Phase V, Penny (c 1065-1095), stylized head ultimately derived from the Long Cross type of Aethelred II left

  • The designs in general are derived from contemporary or Earlier English penny designs, with a significant influence from the recurring long cross / radiate bust of Aethelred II (which originally dates from about 1000 AD).
  • The range of designs is so wide that many of these coins are unique – though there are some common dies and designs which have led numismatists to identify these coins as belonging to a single design / production phase.

Phase VI – Degraded Long Cross Imitations

By about 1100 the Hiberno-Norse coinage settled down into a period of relative stability and a large number of coins of a relatively similar design were produced.

Hiberno-Norse. Circa 1095-1100 to 1150 silver penny (18mm, 0.46 g). Phase VI coinage, Long Cross type

Hiberno-Norse. Circa 1095-1100 to 1150 silver penny (18mm, 0.46 g). Phase VI coinage, Long Cross type

  • These coins had an obverse design which was a degraded form of the Aethelred radiate bust from his ‘long cross’ issue with the addition of a crozier design in front of the face.
  • The reverse feature a pair of sceptres in opposite quarters and the other pair of quarters usually featured a cross or a pellet, or annulet.
  • Phase VI coins were made from a lower grade silver than the previous issues and tend to be darker than the earlier phases.
    • There have been several hoards of these coins found and many individual finds so they tend to be less expensive than all but the phase III coins – as such, they are a good ‘starting point’ for collectors.
    • Phase VI coins are generally unattractive with very poor striking quality and generally dark surfaces which also tends to depress the prices in the marketplace.

Phase VII – Semi Bracteates and Bracteates

The Hiberno-Norse series died out sometime between 1130 and 1150 AD with a series of increasingly thin, under-weight and simplistic coins.

Hiberno-Norse. Circa 1110-1150. AR Penny (20mm, 0.83 g). Phase VII (semi-bracteate) coinage, Scrabo with Quatrefoil type

Hiberno-Norse. Circa 1110-1150. AR Penny (20mm, 0.83 g). Phase VII (semi-bracteate) coinage, Scrabo with Quatrefoil type

  • The first group are double sided with designs derived from the ubiquitous long cross design, but they are generally so thin that the designs from each side are heavily ‘ghosted’ on the other side.
  • The second group are pure bracteates (coins struck on one side only – often with the reverse exhibiting the same design in incuse relief). They are on larger flans than the earlier coins and sufficiently thin that the incused design is quite clear on the reverse as well.
    • These final coins in the series are all quite scarce to very rare and, like Phase V coins, there is a wide variety of designs – many of the individual designs are represented by a single surviving specimen !

This blog post will be followed up with a series of 7 more detailed posts, each one dealing with a single Hiberno-Norse phase.

Each of the above posts will be illustrated (as far as possible) with examples from each Phase and sub-Class of coinage.

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Further Reading:

Bateson, J. D., “A Hiberno-Norse Hoard from Dull, Perthshire”, NC 153 (1993), 211-4.

Blackburn, M. A. S., “Presidential address 2006. Currency under the Vikings. Part 3: Ireland, Wales, Man and Scotland in the ninth and tenth centuries”, BNJ 77 (2007), 119-49.

Blackburn, M. A. S., “Presidential address 2007. Currency under the Vikings. Part 4: The Dublin Coinage c.995-1050″, BNJ 78 (2008), 111-37.

Blackburn, M. A. S., & Seaby, W. A. “The “Francis” and “Brand” parcels of Hiberno-Norse coins”, BNJ 46 (1976), 29-38.

Bornholdt Collins, K., “The 1999 Dunmore Cave (2) hoard (c.965) and the role of coins in the tenth-century Hiberno-Scandinavian economy”

Briggs, C. S. & Graham-Campbell, J. A., “A lost hoard of Viking-age silver from Magheralagan, County Down”, UJA 39 (1976), 204

Dolley, R. H. M., “Some new light on the Viking-Age silver hoard from Mungret”, North Munster Antiquarian Journal 8(3), (1960), 116-33

Dolley, R. H. M., “The 1871 Viking-Age find of silver coins from Mullaghboden as a reflection of Westfalding intervention in Ireland”, Årbok – Universitetets oldsaksamling (Oslo), (1960/1), 49-62.

Dolley, R. H. M., “A note on the find-spots and probable composition of two Viking-Age coin-hoards frmo the County Offaly”, Bulletin of the Numismatic Society of Ireland 5, (1962), 1-4

Dolley, R. H. M., (principal author M. J. O’Kelly) “The 1843(?) find of Viking-Age silver coins from Co. Tipperary”, Journal of the Cork Historical and Archaeological Society 67, (1962), 18-27

Dolley, R. H. M., “New light on the 1837 Wiking-Age coin-hoard from Ballitore”, Journal of the Royal Society of Antiquaries of Ireland 92(2), (1962), 175-86

Dolley, R. H. M., (with H. E. Pagan) “A half-forgotten Viking-Age coin-hoard from Glendalough”, NCirc 72(1), (1964), 1-2

Dolley, R. H. M., “A Hiberno-Norse penny mis-attributed to the 1834 hoard from Kirk Michael”, NCirc 81(1), (1973), 2

Dolley, R. H. M., “A forgotten Hiberno-Norse find from Rathlin Island”, SCMB 666, (1974), 39-40

Dolley, R. H. M., “Some further light on the 1891 Viking-Age coin-hoard from Ballycastle”, Ulster Journal of Archaeology 36/37, (1973/4), 87-9

Dolley, R. H. M., “The 1973 Viking-Age coin-find from Dunmore Cave”, Old Kilkenny Rev.: Journal of the Kilkenny Archaeological Society 1(2), (1975), 70-9

Dolley, R. H. M., “A forgotten eighteenth-century discovery of Hiberno-Norse coins in County Meath”, Ríocht na Midhe 6(1), (1975), 55-8

Dolley, R. H. M., “The two near-contemporary findings of Hiberno-Norse coins from Maughold”, Journal of the Manx Museum 7(88), (1976), 236-40

Dolley, R. H. M., “The Irish coins in the Dresden Coin-Cabinet”, Irish Numismatics 12(71), (1979), 229-30

Dolley, R. H. M., “An eleventh-century Dublin penny found on the isle of Man”, Irish Numismatics 12(72), (1979), 289-91

Dolley, R. H. M., “Additional light on the 1834 coin-hoard from Kirk Michael (Isle of Man)”, Irish Numismatics 13(74), (1980), 82-4

Graham-Campbell, J. A., “The Viking-age silver hoards of Ireland”, Procs. of the Seventh Viking Congress, ed. B. Almqvist and D. Greene (Dublin, 1976), 39-74

Hall, R. A., “A check-list of Viking-age coin finds from Ireland”, UJA 367 (1973-4), 71-86

Kenny, M., “A hoard of Hiberno-Norse coins from Clonmacnoise, Co. Offaly”, Numismatic Soc. of Ireland Occasional Papers 24-8 (1983), no. 25

Kenny, M., “A small hoard of Anglo-Saxon and Hiberno-Norse coins from Co. Louth”, SCMB 1985, 201-4

McShane, J., “Viking ingots found at Mungret Co. Limerick”, IN 1980, 164-5

O’Sullivan, W., “Report on a hoard of Hiberno-Norse coins from site II”, in P. J. Harknett, “The excavation of two tumuli at Fourknocks (sites II and III), Co. Meath”, PRIA, Section C, 71 (1971), 35-89, at 82-9 [O’Sullivan’s report written 1951]

Ryan, M., et al., “Six silver finds of the Viking period from the vicinity of Lough Ennell, Co. Westmeath”, Peritia 3 (1984), 334-81

Stewart, I., “A group of Hiberno-Norse pennies”, NCirc 1971, 405-8.

Warner, R. B., “The coin-hoard from Ballycastle and a reprovenanced tortoise brooch from the River Bann”, UJA 38 (1975), 89-90

Online articles:

Blackburn, M. A. S., “Presidential address 2006. Currency under the Vikings. Part 3: Ireland, Wales, Man and Scotland in the ninth and tenth centuries“, BNJ 77 (2007), 119-49

Blackburn, M. A. S., “Presidential address 2007. Currency under the Vikings. Part 4: The Dublin Coinage c.995-1050“, BNJ 78 (2008), 111-37

National Museum of Ireland, “A Viking Weight found in Ireland – a precursor to coin weights?

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