| Added by |
 Maciej Pasztor
|
| Material | Gold |
| Face value | 3 złote |
| Catalog code (Michel) | 527 |
| Catalog code (Scott) | 451 |
| Catalog code | Polish Stamps Catalog 492 |
| Series | 8th Trade Union congress in Warsaw |
| Print run | 513,600 |
| Issue date | 31/05/1949 |
| Designer | Edmund John |
| Paper type | White, Middel |
| Print technique | Rotogravure |
| Printed by | Drukarnia Narodowa w Krakowie |
| Perforation | 10¾ or 11¼ (line) |
| Height | 24.00 mm |
| Width | 36.00 mm |
| Catalog prices | No catalog prices set yet |
