| Added by |
 Maciej Pasztor
|
| General Description : | Scan 2; differences between U2 and U12 |
| Face value | 5 fenig |
| Catalog code (Michel) | Dieneste 12 |
| Catalog code (Scott) | OFFICIAL O12 |
| Catalog code | Polish Stamps Catalog U12 (Znaczki urzędowe) |
| Series | Numbers 2 |
| Place in series | 1 |
| Stamp colour | Red |
| Stamp use | Official stamp |
| Print run | 1,975,000 (with U1) |
| Issue date | 20/11/1920 |
| Designer | Edmund Ludwik Bartłomiejczyk |
| Paper type | thin laid verticallz or horiyontallz |
| Print technique | Typography |
| Printed by | Drukarnia Poczty i Telekomunikacji Warszawa |
| Perforation | 11˛(line) |
| Height | 16.50 mm |
| Width | 26.00 mm |
| Catalog prices | No catalog prices set yet |
