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Source:
Colnect
Issued by:
Poland
Function:
postage
Date:
4/25
/
1951
Issue:
1st Polish Science Congress
Denom:
1.20z
Color:
gray
Design:
congress emblem
Watermark:
unwmk
Perf:
9-14.5
Catalog value:
Prev:
1.15z cl d=Mikolaj Kopernik 1473-1543
Next:
45g scar issue=Labor Day 1951 d=Worker & flag
External links:
Colnect 138432..ience_congress
Record of changes
