| Added by |
 Maciej Pasztor
|
| Face value | 20 groszy |
| Catalog code (Michel) | 1599 |
| Catalog code (Scott) | 1336 |
| Catalog code | Polish Stamps Catalog 1445 |
| Series | 700th anniversary of Warsaw. |
| Place in series | 3 |
| Stamp colour | Violet blue |
| Stamp use | Commemorative stamp |
| Print run | 101,175,000 |
| Issue date | 21/07/1965 |
| Designer | Czesław Kaczmarczyk: Grav: Eugeniusz Tirdiszek |
| Paper type | White, middel |
| Print technique | Steel engraving |
| Printed by | PWPW (Państwowa Wytwórnia Papierów Wartościowych) |
| Perforation | 11¾ x 11¼ or 12½ x 12 (harrow) |
| Height | 21.70 mm |
| Width | 25.70 mm |
| Catalog prices | No catalog prices set yet |
