Thanks to all for your additional informations. I got now the information that the pilots name was written below the photos in the album, so we can be more sure that "Feldwebel Müller" is correctly.
But where is the loss?
I got the info from Anders Hjortsberg that it was a Messerschmitt build by Erla Leipzig. Camoflage and the G-5 bulge on the cowling speaks for it. This will reduce the possible factory numbers.
He painted a nice profile that you can see here:
http://www.me109.info/display.php?a=e&fid=6244
Thanks to him for the nice work! :-)
Btw... I forgot. The plane made the belly landing after a fight with an enemy plane and there are some bullet holes in the cowling and the rear fuselage. Possible there exists an allied victory claim for it?