I figured E or F based on date. Maybe E-3?
Certainly E, not F. Exact model cannot be seen from this pic and all E:s looked pretty much the same.
Bf 109E variants and sub-variants
E-0 (Pre-production aircraft with 4 × 7.92 mm/.312 in MG 17 machine guns)
E-1 (Similar to E-0)
E-1/B (Fighter-bomber version of E-1, usually with DB 601Aa)
E-2 (Limited production, additional Motorkanone engine mounted MG FF cannon, otherwise as E-3)
E-3 (Similar to E-1 but 2 × 20 mm MG FFs in the wings instead of the MG 17)
E-4 (Armour and structural improvements, change of MG FF cannons to MG FF/M. "Square" canopy)
E-4/B (Fighter-bomber version of E-4, 1 × 250 kg/550 lb bomb, usually with DB 601Aa)
E-4 trop (Version of E-4 modified to serve in tropical regions)
E-4/N (E-4 with DB601N engine)
E-4/BN (Fighter-bomber version of E-4/N, 1 × 250 kg/550 lb bomb)
E-5 (Recon version of E-3, camera equipment, 2 × 7.92 mm/.312 in MG 17)
E-6 (Recon version of E-4/N, camera equipment, 2 × 7.92 mm/.312 in MG 17)
E-7 (Similar to E-4 but with optional 300 L drop tank)
E-7/N (Similar to E-4/N but with optional 300 L tank)
E-7/NZ (also known as E-7/Z, an E-7/N with additional GM-1 nitrous oxide injection system)
E-7/U2 (Ground attack variant of E-7 with additional armour)
E-8 (Long-range version of E-1 using drop tank installation of E-7, 4 × 7.92 mm/.312 in MG 17)
E-9 (Recon version of E-7/N, drop tank, camera equipment, 2 × 7.92 mm/.312 in MG 17)