Poland
0.49 - 0.59$
price on 08.10.2022
| Country: | Poland |
| Type: | Postage stamps |
| Series: | Polish Science Congress |
| Nominal: | 45 gr |
| Year: | 1951 |
| Perforation: | line 13¾ x 10¾ |
| Mintage: | 2,030,000 |
Polish Science Congress
 Stanislaw Staszic |  Marie Sklodowska Curie 0.1$ |  Zygmunt Wroblewski and Karol Olszewski 0.49$ |  Marceli Nencki |
 Mikolaj Kopernik 0.1$ |  Congress Emblem |