Coins were issued for a period of less than two and a half years - see chronology at right. A good recent BNJ reference to the Dublin Exchange is Richard Cassidy, 'Documents of the Irish exchange and mint, 1251-54', British Numismatic Journal 87 (2017), pp 67-72. Click here to see the Exchange accounts (from Cassidy).
Other BNJ References
D. W. Dykes, ‘The Irish coinage of Henry III’, 32 (1963), 99-116