| Added by |
 Maciej Pasztor
|
| General Description : | Like Scott 299 or Pl. St. Cat. 285 Cave! Counterfeits exist. |
| Face value | 30 Groszy |
| Catalog code (Scott) | 306 |
| Catalog code | Polish Stamps Catalog 392 |
| Series | Gordon-Bennett Intl. Balloon Race. |
| Print run | 251,650 |
| Issue date | 15/08/1936 |
| Print technique | Typography (Overprint) |
| Printed by | PWPW |
| Perforation | z |
| Catalog prices | No catalog prices set yet |
