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Source:
Colnect
Issued by:
Poland
Function:
postage
Date:
4/25
/
1951
Issue:
1st Polish Science Congress
Denom:
45g
Color:
purple
Design:
ZFvon Wroblewski nand KSOlszewski
Watermark:
unwmk
Perf:
9-14.5
Catalog value:
In collections:
used
(Stan Shebs)
Prev:
40g ultra d=Marie Sklodowska Curie
Next:
60g grn d=Marceli Nencki
External links:
Colnect 138429..ience_congress
Record of changes
