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postage
1919, Jan 17 Cracow 1 issue ovpted on stamp of Austria unwmk p. 12.5
| - | 3k on 3kr | cl | arms of Austria |
1930, Jul p. 9-14.5
| X | 75g | cl | King John III Sobieski |
1951, Apr 25 1st Polish Science Congress issue
| X | 1.15z | cl | Mikolaj Kopernik 1473-1543 |
1959, Dec 10 scientists (1959)
| X | 60g | cl | Albert Einstein |
1960, Nov 25 1960 issue - historical towns
| X | 60g | cl | Kalisz |
1963, Apr 5 ships (1963)
| X | 60g | cl | Frisian Kogge |
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