IIRC it is the first prototype of the Hs 125 ( Hs.125v-1 ) also marked as the Hs 125a. The D-EKAN was the second prototype marked as the Hs 125b. Although both of the planes looked almost the same, the HS 125b got a better ventilation of the engine compartment ( see the marked areas in the images ). The Hs 125a retained 90% of the design of its predecessor. So the Hs 125v1 was just the modified Hs 121 from the a strut-braced gull-wing plane to the low-wing aircraft receiving the wire braces from the fuselage and V-shaped struts to the landing gear instead the single legs of the Hs 121. The fuselage area behind the engine was the same contrary to the Hs 125b.
Hs 121
Hs 125a
Hs 125b
the pic source: the net.
As an eBay Associate we earn from qualifying purchases.