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Now showing: Bulgaria - Postage stamps (1970 - 1979) - 11 stamps.
1. February WM: None Perforation: 13½ x 13
25. March WM: None Perforation: 13¼ x 13
25. April WM: None Perforation: 13
20. May WM: None Perforation: 13
22. June WM: None Perforation: 13
5. August WM: None Perforation: 13¼
29. August WM: None Perforation: 13
19. October WM: None Perforation: 13