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Source:
Colnect
Issued by:
Bulgaria
Function:
postage
Date:
4/7
/
1976
Issue:
5-year plan 1976
Denom:
20s
Color:
blue green
Design:
Hydropower plant Sestrimo
Watermark:
unwmk
Perf:
13x13.25
Catalog value:
Prev:
13s dkvio d=Chemical Plant Devnya
Next:
4/10/1976 19s multi d=St Porphyrius perf=12x12.25
External links:
Colnect 124091..ern_industrial
