http://cgi.ebay.de/ws/eBayISAPI.dll?...tem=6223580865
It looks that Ju-52s belonged to KGrzbV 9 (or I./TG 3). Plane with Verbandskennzeichen ??+AK (identification is number 9) could be 4V+AK (2./KGrzbV 9 or 2./TG 3). Stammkenzeichen VB+UF is also known as plane of 2./KGrzbV 9, Russia 1942.
http://cgi.ebay.de/ws/eBayISAPI.dll?...tem=6224050098
Photo were not taken at Praha-Kbely (Prag-Gbell) Airfield but at Deutsch Brod (Německý Brod, now Havlíčkův Brod. Some other photos were printed in Janda, Poruba: Messerschmitt Bf 109s of JG-52 in Deutsch Brod, JaPo Publishing 2004.