After the war, the Deutsche Lloyd Flugzeug-Werke (DLFW) at Adlershof, under the supervision of the D.V.L., redesigned a Fok. D.VII into a two-seater. This variant was given the designation DLFW D.VIII. Unfortunately the protype was crashed when performing aerobatics too near the ground. Several more examples were turned out by Hüffer at Krefeld. One served as a flying laboraty for research conducted by the Technical University of Hanover; it was wrecked when landing in fog.
The DLFW D.VIII had the 160 hp Mercedes engine, but it was moved forward and the fuselage lengthened. The wing span and area were the saem as those of the Fok. D.VII.
Quoted from the excellent study of A.R. Weyl on the early years of Fokker (Fokker : the creative years. Putnam). Contains another picture of the DLFW D.VIII D-407 with on the fuselage in big letters 'TRUMF'.

The machine of the Challenge (D-446) was used as a trainer with the Essen flying club (Luftfahrtverein Essen). There cocarde is probably seen on the rudder. This must be at the time when flying for civilian purposes was again permitted in Germany.