Now showing: Bulgaria - Postage stamps (1960 - 1969) - 11 stamps.
1. January WM: None Perforation: 11½
27. January WM: None Perforation: 11½
30. April WM: None Perforation: 11½
15. May WM: None Perforation: 11½
17. May WM: None Perforation: 11½
30. June WM: None Perforation: 10½
30. June WM: None Perforation: 10½
10. July WM: None Perforation: 10½
23. July WM: None Perforation: 11
12. August WM: None
6. December WM: None Perforation: 10½