100 Dollars Colonial Bank

The Colonial Bank operated across the British West Indies and British Guiana from its 1836 founding until Barclays absorbed it in 1925 — this 1919 note falls near the end of independent operations. Perkins, Bacon & Petch had a long relationship with colonial currency work, their intaglio plates producing the high-relief print quality that made forgery genuinely difficult in markets where detection expertise was limited.

The S-prefix in the Pick reference indicates a commercial bank issue rather than a government or central bank series — a classification that understates how central the Colonial Bank's notes were to everyday commerce in territories that had no other reliable paper currency.