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Source:
Colnect
Issued by:
Poland
Function:
postage
Date:
4/25
/
1951
Issue:
1st Polish Science Congress
Denom:
40g
Color:
ultramarine
Design:
Marie Sklodowska Curie
Watermark:
unwmk
Perf:
9-14.5
Catalog value:
Prev:
25g rosecar d=Stanislaw Staszic
Next:
45g pur d=ZFvon Wroblewski nand KSOlszewski
External links:
Colnect 138428..ience_congress
Record of changes
