100 Pounds Northern Bank

Northern Bank Limited was a commercial bank operating under Northern Ireland's unique arrangement of note-issuing rights, which persisted — and still persists — well after such privileges were stripped from most British private banks in the nineteenth century. The £100 denomination was always a low-circulation instrument; at 1968 values, few individuals handled one in the ordinary course of trade. Most moved between businesses and clearing accounts.

Perkins, Bacon had a long record printing colonial and Commonwealth currency by this date, but their work for Northern Ireland's note-issuing banks represents a less-documented corner of their output. The firm was already winding down its banknote operations in the late 1960s.