The photo is of an E-3. Note the round edge on the rear canopy glass (behind the flip-open section)? Note the MG/FF guns in the wings.
Definitely not an E-1, as they had 7mm wing guns, no barrel protruding from leading edge, and no bulge under the wing to house the 20mm cannon drum.
I thought about skinning one like this a while back, never got around to it. Several 109Es never got made but I was semi-interested in doing.