Poland
| Country: | Poland |
| Type: | Postage stamps |
| Series: | Shipbuilder's day |
| Nominal: | 45+15 gr |
| Year: | 1952 |
| Perforation: | frame 12¾ x 12½ |
| Mintage: | 3,087,000 |
Shipbuilder's day
 Sailboats 2.9$ |  Dar Pomorza, School Ship |  Shipyard Worker and Collier |