Dobro Kuba!
Ok, the ammo box cover lifted is an excellent pointer I oversaw, so definitely a /U4. Was there any G-14/U4 subtype? The K-4 issue is a bit more nagging; I discarded this possibility because of the short tailwheel (obvious)and the seemingly small wing bulges (no clear answer). But, we should see the D/F loop ito the right of the soldier f it's a G model we're looking at. Well, nothing to be sure of, but this could point to the K-4 positioning for the D/F loop, one section behind hte G position.
It is unfortunate that so little certainty can be gained with such a sharp and high resolution photograph.
To make that point, did you notice on the the next photograph
http://www.soldiersmuseum.com/pages/...armored-51.htm
that this seemingly formless mass of wrecked airframes in the distance does reveal very clearly a 109K-4?
Thanks for your input!
Cheers
Marc