Issued by Ifni (Spanish Sahara) in 1952 to commemorate “Día del Sello Colonial” (Colonial Stamp Day), this attractive semi-postal set depicts a coastal cormorant perched on a rock, symbolizing the marine environment of the Atlantic territories. The denominations (5+5, 10+5, and 60+15 cts) include a postal value plus a charitable surtax, typical of colonial commemorative issues. Printed by the Spanish National Mint (F.N.M.T.), the stamps are admired for their clean engraving style and strong single-color designs. Complete sets are popular among collectors of Spanish colonies, bird thematic issues, and colonial commemoratives, especially when well-centered and lightly hinged or mint.