Hello,
Currently on ebay are three photos including in the top right corner Albatros C.VII (OAW) C.3588/16 at:
https://www.ebay.de/itm/x3-Fotos-deu...oAAOSwubdfQtq5
It is possible given the writing on the rear of the photo that this machine was with the Beobachterschule at Thorn.
Regards,
Clint