This commemorative stamp was issued by Spanish Guinea in 1960 to honor the centenary of Manuel Iradier (1854–1911), a Spanish explorer celebrated for his expeditions in West Africa. The design features a striking portrait of Iradier wearing a colonial pith helmet, symbolizing his role as an adventurer. In the background, an explorer is shown guiding a boat, highlighting the challenging expeditions into Africa’s rivers and jungles. Printed in a deep brownish-red tone, the stamp carries the inscription “Centenario de Iradier” and the denomination of 60 céntimos. Produced by the F.N.M.T. (Fábrica Nacional de Moneda y Timbre, Spain), it remains a notable colonial-era issue valued for both its historical and artistic significance.