| Added by |
 Maciej Pasztor
|
| Face value | 40 groszy |
| Catalog code (Michel) | 1244 |
| Catalog code (Scott) | 991 |
| Catalog code | Polish Stamps Catalog 1100 |
| Series | Conference of communications ministers of communist countries, Warsaw. |
| Place in series | 1 |
| Stamp colour | Multicolored |
| Stamp use | Commemorative stamp |
| Print run | 1,002,000 |
| Issue date | 26/06/1961 |
| Designer | Stefan Małecki |
| Paper type | White; middel, smooth, chalky |
| Print technique | Offset |
| Printed by | PWPW (Państwowa Wytwórnia Papierów Wartościowych) |
| Perforation | 11 (comb) |
| Height | 23.00 mm |
| Width | 23.00 mm |
| Catalog prices | No catalog prices set yet |
