100 Pounds Belfast Banking Company

The Belfast Banking Company Limited was absorbed into the Northern Bank in 1970, making the tail end of this note's issue period a transitional one — later-dated examples from the 1960s were being printed even as the institution's independence was effectively numbered. The series ran for an unusually long forty-five years without a fundamental design change, a reflection of conservative Northern Irish banking practice rather than any printing economy.

At £100, this was a commercial denomination — clearing houses and linen trade settlements, not retail. Genuine circulation survivors are rare for that reason alone; most were retired quickly through inter-bank channels rather than worn down in everyday use.