Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | Historic Buildings in Koprivtica |
| Nominal: | 6 ст |
| Year: | 1971 |
| Perforation: | line 12½ |
| Mintage: | 750,000 |
Historic Buildings in Koprivtica
 Kantardziiski house 0.07$ |  Building 0.16$ |  Building |  Building |