[James A Pratt III]

I have found some pictures of some HS 123s in a old fall 1972 IMPS-USA Quarterly taken at Novotscherkask Southern Russia in 1941-42 taken by a groundcrewman Kurt Tiedemann. The article has them believed to part of II/SG 1 training unit. The numbers and codes:

2-CA+ZW
6-BV+WM
8-PJ+AZ
10-CK+KZ
12-CN+AX

there were 12 aircraft like this numbered 1 to 12 the the other codes were not known. Does anyone know the unit or fates of these aircraft?