Poland
Print: Polska Wytwórnia Papierów Wartościowych
| Country: | Poland |
| Type: | Postage stamps |
| Nominal: | 4 zł |
| Year: | 2020 |
| Material: | white medium smooth fluorescent |
| Size: | 25.5 x 31.25 mm |
| Perforation: | 11¾ x 11½ |
| Mintage: | 4,000,000 |
