This blue 5 Centavos stamp from El Salvador features a finely detailed engraving of a monument, likely honoring national or civic pride. Issued under the inscription “CORREOS – REPUBLICA DE EL SALVADOR C.A.”, it also bears the label “UPU”, referencing the Universal Postal Union. The wording “FRANQUEO DEFICIENTE” indicates its use for postage deficiency — applied when insufficient postage was paid. Its elegant classical design and deep blue tone make it a distinctive example of early 20th-century Salvadoran postal issues.