Messerschmitt Bf 109 in Yugoslav service
The Royal Yugoslav Air Force (VVKJ) operated the German Messerschmitt Bf 109E-3 fighter aircraft from August 1939 to April 1941. During that period, the VVKJ obtained 73 Messerschmitt Bf 109E-3s from Germany, marking the second-largest export sale of the model.
Source: Wikipedia — Messerschmitt Bf 109 in Yugoslav service (CC BY-SA 4.0)