Bidspirit auction | Airmail Angola. 1930. Letter from

Airmail Angola. 1930. Letter from Lunda, postage of 1$60 (strip of 3 of 50 cents, and stamp of 10 cent.), invalidated by dater 3-JUN-1930, sent to Tchikapa, 4.6, where it was postage-paid with 1.50 Belgian francs to pay the air postage to Europe. Transit in Leopoldville 28.6, where it caught the flight to Belgium.