This classic 1893 provisional issue features a bold “UN CENTAVO” surcharge applied to an earlier 2 Centavos red definitive, issued during a period of postal rate adjustment. The stamp portrays President Carlos Ezeta, reflecting El Salvador’s late-19th-century political era. Such emergency overprints were produced to meet temporary shortages of lower denominations, making them historically significant to collectors. The strong black vertical overprint contrasts attractively with the engraved red base design. Provisional surcharges from Central America remain highly collectible due to their limited usage and postal necessity origins.