Brazil air post & flight covers, 20th, accumulation of 539 covers incl. Luftpost bi-planes, Pan Air, "Free of Duty", Mala Aerea, censored, registered, many better cancels throughout incl. Lapa, Ruaohu, Fortaleza, Manales, Porte Alegre, Berlin-Steglitz, Flensburg, Praia Vermel, Copenhagen, Belo Horizonte, Natal, Curityba and Therezopolis, some have faults, mostly fine-very fine lot