Bulgaria
| Country: | Bulgaria |
| Type: | Postage stamps |
| Series: | International Letter Writing Week |
| Nominal: | 45 ст |
| Year: | 1959 |
| Perforation: | line 11 |
| Mintage: | 100,000 |
International Letter Writing Week
 Envelope, Postal Horn with Globe |  Dove of Peace, Cover with Globe |