Poland
| Country: | Poland |
| Type: | Postage stamps |
| Series: | 75th Anniversary of Universal Postal Union (U.P.U.) |
| Nominal: | 6 zł |
| Year: | 1949 |
| Material: | white |
| Perforation: | frame 12¾ x 12½ |
| Mintage: | 500,000 |
75th Anniversary of Universal Postal Union (U.P.U.)
 Stage coach |  Postal steamboat |  Postal airplane Douglas DC 3 Dakota |