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Source:
Colnect
Issued by:
Bulgaria
Function:
airmail
Date:
5/21
/
1957
Issue:
10th Anniversary of Civil Air Transport in Bulgaria
Denom:
80st
Color:
multicolored
Design:
Watermark:
unwmk
Perf:
13
Catalog value:
Prev:
10/15/1956 80st dkgrn issue=30th Anniversary of Gliders in Bulgaria
Next:
11/18/1958 80st grnbl issue=International Geophysical Year perf=11
External links:
Colnect 396455..on_in_Bulgaria
Record of changes