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Source:
Colnect
Sheet:
Issued by:
Bulgaria
Function:
postage
Date:
1/24
/
1973
Issue:
Undersea research in the Black Sea
Denom:
20s
Color:
multicolored
Design:
Lifting Balloon
Watermark:
unwmk
Perf:
imperf
Sort pos:
4
Catalog value:
Prev:
20s d=Camera Lift NJW 100
Next:
40s perf=12.5
External links:
Colnect 410726.._the_Black_Sea
