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 ISLAS GALAPAGOS 1ER CORREO AEREO CONTINENTE JULIO 15 1957 'Tortoise' cachet alongside and also boxed POST OFFICE GALAPGOS 'Barrel Mail' cachet. Addressed to QUITO with 'Armada Del Ecuador B.A.E. "El Oro" -Comandante' ANCHOR cachet on reverse with light QUITO arrival mark.