| Added by |
 Maciej Pasztor
|
| Face value | 20 groszy |
| Catalog code (Michel) | PL 1730 |
| Catalog code (Scott) | PL 1466 |
| Catalog code | Yvert et Tellier PL 1582 Stanley Gibbons PL 1709 AFA number PL 1615 Polish Stamps Catalog (Fischer) PL 1582 |
| Series | Conquest of space.II |
| Place in series | 1 |
| Stamp colour | Multicolored |
| Stamp use | Commemorative stamp |
| Print run | 5,694,030 |
| Issue date | 20/12/1966 |
| Designer | Tadeusz Michaluk |
| Paper type | White, middel |
| Print technique | Offset lithography |
| Printed by | PWPW (Państwowa Wytwórnia Papierów Wartościowych) |
| Perforation | 11½ x 11 (comb) |
| Height | 39.00 mm |
| Width | 27.00 mm |
| Catalog prices | No catalog prices set yet |
