| Added by |
 Maciej Pasztor
|
| Material | Gold |
| Face value | 90 groszy |
| Catalog code (Michel) | 715 |
| Catalog code (Scott) | 532 |
| Catalog code | Polish Stamps Catalog 577 |
| Series | Six-Years Plan: mining. |
| Print run | 6,431,000 |
| Issue date | 04/12/1951 |
| Designer | Czesław Słania |
| Paper type | White; Thin Smooth |
| Print technique | Steel engraving |
| Printed by | PWPW (Państwowa Wytwórnia Papierów Wartościowych) |
| Perforation | 12¾ x 12½ (harrow) |
| Height | 20.90 mm |
| Width | 27.00 mm |
| Catalog prices | No catalog prices set yet |
