[CENTURION]

Hello Santiago,

here are US claims (and losses) in 1943 / 44 over Bulgaria:

14/11/43 82nd FG Claims: 3 Me109 + 2 FW190 for 1 P38 (lost an engine in the target area, disappeared over Yugoslavia)
24/11/43 82nd FG Claims: 2 Me109 for 1 P38 (out of fuel)
10/12/43 82nd FG Claims: 8 Me109 + 1 FW 190 for 1 P38
20/12/43 82nd FG Claims: 2 Me109 + 1 FW 190 for 3 P38
04/01/44 82nd FG Claims: 1 Me109 (damaged)
10/01/44 14th FG Claims: 5 Me109 + 4 FW 190 for 2 P38 (one for crash landing at the airfield)
30/03/44 82nd FG Claims: 4 Me109 + 1 FW 190
30/03/44 14th FG Claims: 1 Me109 for 1 P38
30/03/44 1st FG Claims: 6 D520
17/04/44 31st FG Claims: 3 Me109 for 1 P51 (mechanical failure)
17/04/44 325th FG Claims: 4 Me109
11/06/44 52nd FG Claims: 13 Me109 + 1 FW 190 for 1 P51
24/06/44 82nd FG Claims: 7 Me109

Sources:
"Adorimini - A history of the 82nd FG" by Steve Blake
"The 14th FG in WW2" by J. Lambert
"Spitfire and yellow tail mustangs (52nd FG)" by T. Ivie
"An escort of P-38 (1st FG)" by J. Mullins
"In a now forgotten sky (31st FG)" by D. Kucera
"USAAF MTO Claims" by F. Olynyk

Let me know if you need the name of the american pilots.
Also, I wonder if you can provide the list of Bulgarian fighter losses in the same period.

Thanks

Regards
Marco