| Added by |
 Maciej Pasztor
|
| Material | Gold |
| Face value | 75 Groszy (+1,25 Zloty) |
| Catalog code (Scott) | B31 (Semi-postal) |
| Catalog code | Polish Stamps Catalog Blok 6 |
| Series | Issued in advance of a proposed Polish stratosphere flight. |
| Print run | 65,000 |
| Designer | Leonard Sowiński Grav. Władysław Vacek |
| Paper type | White |
| Print technique | Engraving |
| Printed by | PWPW (Polska Wytwórnia Papierow Wartosciowych) |
| Perforation | 12½ x 12 harrow (Polish catalog) |
| Height | 125.00 mm |
| Width | 75.00 mm |
| Catalog prices | No catalog prices set yet |
