1 Pound Provincial Bank of Ireland

The Provincial Bank of Ireland was incorporated by Royal Charter in 1825 specifically to break the stranglehold of local private banks across the Irish provinces — its branch network was unusually extensive for the period, and its notes circulated widely outside Dublin at a time when the Bank of Ireland's guaranteed circulation zone made competition in the capital legally complicated. By 1920, Irish commercial banks were still issuing their own notes under the pre-partition system, and the Provincial continued doing so after the Free State was established in 1922, operating across both jurisdictions during an administratively chaotic transition period.

The bank eventually merged into Allied Irish Banks in 1966. Notes from this 1920–1927 window straddle two political realities on the same printed sheet.