| Added by |
 Maciej Pasztor
|
| Face value | 20 groszy |
| Catalog code (Michel) | 1046 I:II |
| Catalog code (Scott) | 805 |
| Catalog code | Polish Stamps Catalog 901 I;II |
| Series | Town halls |
| Place in series | 1 |
| Stamp colour | Green |
| Stamp use | Commemorative stamp |
| Print run | 99,016,000 |
| Issue date | 29/03/1958 |
| Designer | Sława Gospodarek |
| Paper type | White; Thin Smooth |
| Print technique | Steel engraving |
| Printed by | PWPW (Państwowa Wytwórnia Papierów Wartościowych) |
| Perforation | 12½ x 12¾ or 11¾ x 11½ (harrow) |
| Height | 27.00 mm |
| Width | 21.50 mm |
| Catalog prices | No catalog prices set yet |
