1 Rouble Canadian YMCA Siberia

Issued by the Canadian YMCA contingent operating in Siberia during the Allied intervention of 1918–1920, these tiny scrip notes were produced as a canteen currency for Canadian troops supporting the anti-Bolshevik White forces. The YMCA ran canteens, rest huts, and supply operations across the intervention zone, and scrip like this kept transactions manageable without relying on the catastrophically inflated local ruble.

At 35 × 22 mm, this is among the smallest pieces of military scrip on record — closer in size to a postage stamp than a banknote. Survivors are genuinely rare; most were redeemed or simply discarded when Canadian forces withdrew in 1919.