25 Centavos Countermarked

Spain authorized a series of countermarks on circulating Spanish colonial coinage in Cuba during the 1870s as a direct response to the monetary chaos of the Ten Years' War — the first Cuban independence uprising, which ran from 1868 to 1878. Counterfeit and debased coins flooded the island as the colonial economy strained under wartime conditions, and the countermark program was intended to validate and re-authorize specific pieces for continued circulation.

The R4.2 designation distinguishes a specific host coin and countermark pairing. Host coin condition varies enormously within this type, as the countermark was applied to already-circulating pieces.