This was probably the first series of FED cameras produced at Kharkov after the return from Berdsk, although I have seen it suggested that some may have been assembled at Berdsk. These cameras have a fine pattern on the wind and rewind knobs and brass shutter boxes. Serial numbers 20xxxx.
Known serial numbers:
# 200114 ____ 123548 ______ David Tomlinson
# 200146 ____ ? ___________ Private collection Russia
# 200209 ____ 75885/59/7___ Jacques M.
# 200600 ____ ? ___________ Alexander K.
# 200863 ____ ? ___________ French collector.