60e anniversary of the maiden-flight for the scheduled Sabena connection Brussels-Kinshasa, 1985 (1935-1985)
First Day Covers (FDC):
Design:
Editor:
Note: Blanco or airmail envelopes are not shown here but do exist.
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FDC Block 59 perforated:
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FDC Block 59 imperforated: Not known to exist.
Souvenir: 19 February 1985.
This envelope was made to celebrate the 60e anniversary of the maiden-flight for the scheduled Sabena connection Brussels-Kinshasa (1935-1985).
They are numbered (lower right). Circulation:
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