Issued in 1957 for Día del Sello (Stamp Day), this 15+5 céntimos brown stamp from Spanish Guinea features a striking depiction of an African elephant (Elephas). The surcharge (+5 cts) was added for a semi-postal purpose, supporting postal or cultural funds. Printed by F.N.M.T. (Fábrica Nacional de Moneda y Timbre), the design emphasizes the majestic strength of the elephant, a symbol of Africa’s wildlife heritage. This issue is prized among collectors of colonial Africa, fauna-themed stamps, and Spanish colonial philately.