Poland
| Country: | Poland |
| Type: | Postage stamps |
| Series: | Intl.Museum Week,(UNESCO) |
| Nominal: | 1.55 zł |
| Year: | 1956 |
| Size: | 42 x 55 mm |
| Perforation: | frame 11¼ x 11 |
| Mintage: | 1,082,200 |
Intl.Museum Week,(UNESCO)
 Dying Niobe sculpture 0.29$ |  Madonna by Veit Stoss 0.06$ |  "Lady with the ermine'' by Leonardo da Vinci |