This 1 peseta stamp from Spain, issued in 1963, commemorates the historic Second Vatican Council (Concilio Ecuménico Vaticano II), convened by Pope John XXIII and continued under Pope Paul VI. The design features a finely engraved portrait of Pope Paul VI (S.S. Pablo VI) alongside the grand dome of St. Peter’s Basilica in Vatican City. The issue symbolizes Spain’s recognition of this major event in modern Catholic history, marking a period of renewal and reform within the Church. Printed by F.N.M.T. (Fábrica Nacional de Moneda y Timbre), it remains a significant piece in both religious and thematic collections.