C,
I think the machine could be salvaged. The bobbin winder is not critical. The tension assembly could be gotten. Same as on a Patent elastic by Claes. It is on an Adler Stand. Other bobbin winder could be used.
Patent elastic bobbin winder ,( and I mean the manual one) , could be used. If I had it here in the USA, I could rebuild it. The hook, bobbin and throat plate can still be gotten as you know C. If price is low enough, I would get it if I were him. Early Claes parts are on Ebay.de. I have seen them and Eric has ordered some of them C.
glenn