Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Horses |
| Nominal: | 35 ст |
| Year: | 1991 |
| Size: | 50 x 40 mm |
| Perforation: | comb 12¾ x 12½ |
| Mintage: | 1,270,000 |
Horses
 Przewalski's Horse 0.05$ |  Tarpan 0.05$ |  Arabian Horse 0.15$ |  Arabian Horse |
 Shetland Pony |  Cold-blooded Horse 1.5$ |