| Added by |
 Maciej Pasztor
|
| Face value | 60 groszy |
| Catalog code (Michel) | PL 993 |
| Catalog code (Scott) | PL 757 |
| Catalog code | Yvert et Tellier PL 881 Stanley Gibbons PL 996 AFA number PL 884 Polish Stamps Catalog (Fischer) PL 850 |
| Series | The opening of the postal museum in Wrocław |
| Stamp colour | blua and black |
| Stamp use | Commemorative stamp |
| Print run | 188,200 |
| Issue date | 12/12/1956 |
| Designer | St. Bernaciński |
| Paper type | White; Middel Smooth |
| Print technique | Offset lithography |
| Printed by | PWPW (Państwowa Wytwórnia Papierów Wartościowych) |
| Perforation | 12½ x 12¾ (comb) |
| Height | 31.25 mm |
| Width | 25.50 mm |
| Catalog prices | No catalog prices set yet |
