Hello,
Currently on ebay is a photo of LVG C.II (Ago) C.9926/17 at :
https://www.ebay.de/itm/Foto-Flieger...IAAOSw-2xex5yr
The rear of the photo is in several respects more attractive than the front with beautiful handwriting and details of the crash. Given the location, the machine is possibly from FEA 4.
Regards,
Clint