Thanks Ed for the input and the links! In the meantime a friend sent me a great starboard view of this aircraft (thanks Marko!):
http://i304.photobucket.com/albums/n...daumann/fr.jpg
The photo is from Jim Crows collection and saw print in Kagero's Ju 88 Volume III. Location is not specified, but it's definitely Fritzlar. Unfortunately the Werknummer is not completely readable from this scan, but should be in the original shot. Looks like 7146xx. ??
Christian