Hello,
Currently on ebay an example of the rarely seen Fokker B.I 1043/14
https://www.ebay.de/itm/286090575879...YAAOSwpupm~tqJ
The seller also has other photos of FEA 5 machines,although I don't recall that the Albatros C.IX served with that unit
https://www.ebay.de/sch/i.html?_dkr=...=flieger%20ers
The seller also has a photo of a Fokker Eindecker.
https://www.ebay.de/itm/286090616559...Bk9SR4j1nLvKZA
Regards,
Clint