| Added by |
 Maciej Pasztor
|
| Material | Gold |
| Face value | 30 złotych |
| Catalog code (Michel) | 534 |
| Catalog code (Scott) | 458 |
| Catalog code | Polish Stamps Catalog 499 |
| Series | The 75th anniversary of the Universal Postal Union |
| Print run | 500,000 |
| Issue date | 10/10/1949 |
| Designer | Stefan Łukaszewski |
| Paper type | White, Thin |
| Print technique | Steel engraving |
| Printed by | PWPW SA (Polska Wytwórnia Papierow Wartosciowych SA) |
| Perforation | 12¾ x 12½ (harrow) |
| Height | 20.50 mm |
| Width | 26.30 mm |
| Catalog prices | No catalog prices set yet |
