0.10 Peseta Estopiñán

Estopiñán is a small municipality in the province of Huesca, Aragon, and like hundreds of Spanish towns it issued its own fractional emergency currency during the Civil War years of 1936–1939. The collapse of small-denomination coinage in circulation — driven by hoarding and the disruption of the Republic's monetary supply — forced local governments and even individual businesses to print their own substitute cartones and billetes de necesidad.

These hyper-local issues were produced under improvised conditions, often by a local printer or hand-stamped authority. Surviving examples from very small municipalities like Estopiñán are genuinely scarce simply because the total print runs were tiny and redemption was rarely orderly once the war ended.