Poland
The stamp exists also with the watermark "Posthorn Type 2 Multiple [Inv] - III-5"
| Country: | Poland |
| Type: | Postage stamps |
| Series: | Parliament |
| Nominal: | 2.50 zł |
| Year: | 1959 |
| Perforation: | comb 12 x 12½ |
| Mintage: | 437,500 |
Parliament
 Sejm Building 0.19$ |  Sejm Building |