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The stamps issued in 1902 for the 25th anniversary of the Schipka Pass battle exist
in two different plate types, randomly distributed across the sheet:
![]() Type I |
![]() Type II |
![]() Type I |
![]() Type II |
![]() Type I |
![]() Type II |
Source:
- R. Weinbrecht: Handbuch Bulgarien, Postwertzeichen Teil 1 1879-1944, issued 1993