Airmail cover franked with 1957 20c sepia, 50c violet & 1s bronze green 'Galapagos' issue (SG 1/3) tied by undated ISLAS DE GALAPAGOS DIA DE EMISION JULIO 13/18 1957 'Tortoise' first day cancel with undated 'CORREOS DEL ECUADOR SAN CRISTOBAL PROVINCE DE GUAYAS' and 'CORREOS DEL ECUADOR ISABELLA ARCHIPIELAGO DE COLON' cancels and 'POST OFFICE GALAPAGOS' Barrel Mail cachet all on front plus various other small 'Island' cachets. Addressed to GUAYAQUIL with 'Armada Del Ecuador B.A.E. "El Oro" -Comandante' ANCHOR cachet on reverse.