| Added by |
 Maciej Pasztor
|
| Face value | 20 groszy |
| Catalog code (Michel) | Germany GG Dienstmarken 20 |
| Catalog code (Scott) | Poland Occup. official stamps NO20 |
| Catalog code | Polish Stamps Catalog GG OU 20 |
| Place in series | 5 |
| Stamp colour | Black brown |
| Stamp use | Official stamp |
| Paper type | White, middel, smooth. |
| Print technique | Photogravure and: typography |
| Printed by | State Printing in Vienna |
| Perforation | 12 (harrow) |
| Height | 16.25 mm |
| Width | 21.50 mm |
| Catalog prices | No catalog prices set yet |
