Poland
perf line 10¾; 11 or 11¼ (Michel!)
| Country: | Poland |
| Type: | Postage stamps |
| Series: | Working Class Unity Congress |
| Nominal: | 5 zł |
| Year: | 1948 |
| Material: | white smooth. |
| Perforation: | Various |
| Mintage: | 4,513,800 |
