Poland
The stamp exists also with the watermark "Posthorn Type 2 Multiple [Inv] - III-5"
| Country: | Poland |
| Type: | Postage stamps |
| Nominal: | 2.50 zł |
| Year: | 1963 |
| Size: | 31.25 x 39.5 mm |
| Perforation: | comb 11½ x 11 |
| Mintage: | 1,601,600 |
