As i have some background information from VDB Stephan
i wanna go inline with the statement of T
If you wanna have a perfect as new working movement in age of 70 years you have to look for every detail piece
to get this assambled you need more than two or three movements. (and of course many time and a goodwatchman)
one or two steps below and with luck you get one movement which needs only cleaning, but this one has 70 years of mechanical use behind too.
I always say to Stephan that he sell his watches too cheap. No one can imagine how much time and getting grey hairs is in his watches.
Sometimes the watch is pefecty assembled and then it stops again without knowing what happend...
His favor is to build watches, so sometimes the way is the target and this is one reason that his watches cost not 5000 or 10000 dollar.
But under the line they have to
(This is not a post to raise the prices, but for those who want to have a cheapo cheapo perfect Vintage Watch)
Cheers Helmut