As far as I know nothing precluded makers from conserving or setting aside early manufacture parts be used in later production. By 1942 new production should have been using plated zinc fittings unless they had adequate stocks of previously manufactured parts on hand.
A 1942 manufactured aluminum mounted Fliegerschwert (crossover or not) is not too much of a stretch. But I think that first generation nickel silver mounts might be harder to justify, especially since same vintage presentation models also seem to be aluminum.
What I would like to know about is the �swap�. What was that all about?? FP
