Similar is not the same as same.
However with the oddity presented , the trailing edge of the aileron is scalloped, betraying a probable wire trailing edge, as used in early Fokker and Albatros types.
The rear fuselage has that Fokker "look' about it and I think we are possibly looking at a tailplane "sans elevator" to make comfortable aerodynamic sense. The fin shape is
not D.V11.
However if you examine the rear part fuselage of the Fokker D.IX in this shot (note the panels and stitching) and compare it to the unknown and unmarked mystery aircraft.......?
Now, as the one example of the D.IX went to the U.S.A. for evaluation by the U.S. Army in 1922 and was subsequently abandoned, might the shot possibly be from the U.S.A. of some post airframe disposal "Bitsa"???
(One could reasonably presume the original Hispano Engine would have been retained by the U.S.Army).