Now showing: Bulgaria - Postage stamps (1970 - 1979) - 11 stamps.
18. March WM: None Perforation: 12¾ x 13½
14. April WM: None Perforation: 12½
20. May WM: None Perforation: 12½
20. May WM: None Perforation: 12¾
26. June WM: None Perforation: 13
10. July WM: None Perforation: 12½
31. July WM: None Perforation: 12½
15. September WM: None Perforation: 12½
20. September WM: None Perforation: 12½
13. October WM: None Perforation: 13
4. November WM: None Perforation: 12½