Auction #1949 WORLDWIDE + ARGENTINA: End-of-year general auction

Cover with its letter dated Floreana (Island) 5/NO/1941, sent without postage to Guayaquil, with blue circular marking: 'POST OFFICE BAY - GALAPAGOS - ECUADOR', transit of Panama Canal 24/NO, due mark for 6c. of the American office in Balboa, and arrival backstamp of Guayaquil, excellent quality, very rare.