Issued by Correos de España in 1993, this 28-peseta commemorative stamp celebrates the Día del Sello (Stamp Day). The central design depicts an ornate antique postbox mouth (boca de buzón), featuring the crowned globe emblem of Correos, symbolizing Spain’s long postal heritage and its global communication network. The soft gradient background in blue and pink evokes elegance and modernity, contrasting beautifully with the brown engraved motif. Produced by F.N.M.T. (Fábrica Nacional de Moneda y Timbre), it honors the historical evolution of Spanish postal services.