Wikimedi'Òc

Bulgarian Air Force roundel 1944 (wings).svg - Kwasura

Cross-Pattee-Heraldry.svg - Great Brightstar

Bulgarian Air Force roundel 1946.svg - Fry1989

Roundel of Bulgaria (1944–1946).svg - F l a n k e r

Roundel of Bulgaria 1918.svg - EclecticArkie

Roundel of Bulgaria (1941–1944).svg - FDRMRZUSA

Roundel of Bulgarian Navy (1919).svg - Goldsztern

Roundel of Bulgaria (1937-1941).svg - F l a n k e r