Hello,
Currently on ebay is a photo of a collection of trainer aircraft, not Nordfrankreich, not 1918 at:
https://www.ebay.de/itm/J493-Frankre...AAAOSwaWFgBqqO
The largest number of the aircraft appear to be DFW B.I, along with at least two Aviatik and one Albatros B.I
The serials are not exactly clear. With a view to identifying the unit can anyone identify any of the serials shown, and I use the word shown loosely?
Regards,
Clint