| Added by |
 Maciej Pasztor
|
| Face value | 50 mark |
| Catalog code (Michel) | Porto 45 |
| Catalog code (Scott) | POSTAGE DUE J51 |
| Catalog code | Polish Stamps Catalog D45 (Znaczki dopłaty) |
| Series | Numbers and Eagle |
| Place in series | 1 |
| Stamp colour | Indigo |
| Stamp use | Postage Due stamp |
| Designer | Edward Trojanowski |
| Paper type | White; very thin |
| Print technique | Typography |
| Printed by | PZG Warszawa |
| Perforation | 12½ x 12¾ (harrow) |
| Height | 25.00 mm |
| Width | 19.00 mm |
| Catalog prices | No catalog prices set yet |
