Hi Barry,
Judging by the photograph, the
Werk Nummer of the model aircraft is actually 170 412, unless I've misread it.
The code for Karl Langenberg's aircraft was 'White 7 + '. Langenberg was
Staffelkapitaen of 5./Sch.G. 2, and later 1./S.G. 4, both of which used white codes. Fuselage band of his aircraft would have been white, for the Mediterranean theatre.
Cheers,
Andrew A.
Air War Publications -
www.airwarpublications.com