5 Pounds Allied Irish Banks

Allied Irish Banks Limited was formed in 1966 through the merger of the Hibernian Bank, the Munster & Leinster Bank, and the Provincial Bank of Ireland — three institutions with roots stretching back to the nineteenth century. The consolidated entity issued its own notes under the Currency Act, operating alongside the Central Bank of Ireland rather than being supplanted by it, a quirk of Irish banking law that permitted licensed commercial banks to remain issuers of legal tender far longer than their counterparts in most other European countries.

De La Rue's production of this series is unremarkable technically, though the short issue window of roughly two years before the series was retired suggests it was always intended as a transitional type.