Stampless airmail cover with typed 'Envia Vicente Antonio Nunez Rincon, Direccion: Carcel Modelo de Maracaibo, Estado Zulia' return address on front with oval 'CARCEL PUBLICA DE MARACAIBO REVISADO ESTADO ZULIA' censor mark with official signature on reverse with MARACAIBO cds dated 3 FEB 1959 alongside. Addressed to CARACAS with boxed arrival mark on reverse.