Thank you Jagdpanzer and paule, your information is very important for me.
Like you say Jagdpanzer, one of the airplanes flown by Ernst Udet was a triplane Fokker Dr.1 called "Optical Illusion", and that previously had been flown by Leutnant Hans Kirschstein. This airplane had tail surfaces, struts, wheel covers, most of the fuselage and the upper wing painted in a striped black and white scheme. Udet only added its personal emblem (Lo!) painted in red to the sides of the fuselage. Perhaps it is the airplane of which you speak. (By the way, you have made a wonderful work, your Fokker is beautiful really.
Congratulations my friend !!!!)
Second Udet's Fokker D.VII, totally covered of lozenge and with nose, struts and wheel covers painted in black, was early OAW-built, the 2117/18 ("Aces 3" by W. Wayne Patton, squadron/signal publications).
Third Udet's Fokker D.VII (4253/18), was an airplane BMW-powered. Certainly, it was painted totally in red but with the wings covered with lozenge. By the way, this airplane later was flown by Hermann Göring, who painted the rear fuselage and the tail in white.
Nevertheless, I'm searching information about his Fokker D.VII early-OAW powered by a Mercedes engine (526/18). I think that Paule's image is maybe this airplane (pretty postal, my friend!!!), but the image does not say anything about the serial number of the airplane.
In this image, the chevron that extends throughout the fuselage forms a single strip, but other profiles show two strips. What is the correct version? I don't know.
Well Jagdpanzer and paule my friends, thank you very much for your help. I send you strong embrace from México City.
Your friend: