Re: Black paint on silencer, gearbox and crankcase?
I've seen plenty of post war army repainted motorcycles, going back to a gloss or semi gloss Bronze Green. Often the engine and gearboxes were painted too, even sometimes the complete mag/dyno, carb and cylinder barrel. Which were always done in the same colour green. I can't think of any practical or purposeful reason to "two tone" a WD motorcycle. Ron