Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Definitives 1915 |
| Nominal: | 25 ст |
| Year: | 1915 |
| Size: | 21 x 29 mm |
| Perforation: | line 11½ |
| Mintage: | 6,250,000 |
Definitives 1915
 Ruins of castle Tsar Asen |  Tsar Ferdinand in Admiral's uniform 0.1$ |  Tsar Ferdinand I (1861-1948) |  Tsar Ferdinand I (1861-1948) 0.12$ |
 Iskertal 0.19$ |  Rila Monastery 0.21$ |