The Bf 109 V-13 and V-14 (here the V-13 at Dübendorf in July 1937) if they look a lot like the Bf 109E are not the prototypes of the BF 109E These are planes prepared for the competition. Both aircraft are actually based on Bf 109 B.
The Eduard seat, whose shape is wrong, has been replaced by an SBS seat. The "early" round handle is a copy of the part from a BF 109 A Classic Airframe.