| Added by |
 Maciej Pasztor
|
| Face value | 20 groszy |
| Catalog code (Michel) | PL 1570 |
| Catalog code (Scott) | PL 1307 |
| Catalog code | Yvert et Tellier PL 1423 Stanley Gibbons PL 1549 AFA number PL 1454 Polish Stamps Catalog (Fischer) PL 1421 |
| Series | Prehistoric animals |
| Place in series | 1 |
| Stamp colour | Multicolored |
| Stamp use | Commemorative stamp |
| Print run | 8,101,000 |
| Issue date | 05/03/1965 |
| Designer | Andrzej Heidrich |
| Paper type | White, middel, chalky |
| Print technique | Offset lithography |
| Printed by | PWPW (Państwowa Wytwórnia Papierów Wartościowych) |
| Perforation | 12½ (comb) |
| Height | 35.30 mm |
| Width | 46.50 mm |
| Catalog prices | No catalog prices set yet |
