Poland
stamp from souvenir sheet
| Country: | Poland |
| Type: | Postage stamps |
| Series: | PRAGA'78 Intl.Phil. Exhib. |
| Nominal: | 6 zł |
| Year: | 1978 |
| Size: | 31.25 x 39.5 mm |
| Perforation: | frame 11½ x 11¼ |
| Mintage: | 739,500 |