Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Balkan games |
| Nominal: | 50 лв |
| Year: | 1931 |
| Perforation: | line 11½ |
| Mintage: | 30,000 |
Balkan games
 Relay Race 0.16$ |  Hammer Throw 0.21$ |  Women's Long Jump 0.1$ |  High Jump 0.21$ |
 Discus Throw 1.2$ |  High jumper 2.2$ |  Javelin 0.2$ |  Hurdling 0.25$ |
 Shot Put 2.1$ |  Running 0.16$ |  Balkan sport games |  Balkan sport games |