1937 GB & Northern Ireland brass threepence (The Old Currency Exchange, Dublin).

O’Brien Coin Guide: GB & Northern Ireland Brass Threepence (George VI)

Background: By the end of George V’s reign the threepence had become unpopular in England because of its small size but it remained popular in Scotland. It was consequently decided to introduce a more substantial ‘thru’penny bit’ which would have a more convenient weight/value ratio than the silver coinage. The silver threepence continued to be…