Bulgaria
Stamp from block
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | UN (United Nations), 15th Anniversary |
| Nominal: | 1 лв |
| Year: | 1961 |
| Perforation: | Imperforate |
UN (United Nations), 15th Anniversary
 UN-Building, New York 1.3$ |  UN-Building, New York |