#4 auction
Lot 187:
1946 (31.12) – 1st Flight of the Imperial Air Line. Envelope circulated from Lisbon/Restauradores (29.12.46) to Sá da Bandeira (05.01.47) with transit via Luanda (03.01.47) with a Caravela-type stamp of 5$00, MF629. Commemorative stamp of the flight struck in black.
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