After a nice phone call, where I unfortunately couldn't resolve his problem, how and where to repair chinese movements, I got a very nice donation from Mr.Keilhammer, who also likes to work with watches and got those watches from a friend some years ago.
Besides a like NOS Bifora ladies watch with a Bifora 68 caliber (with KIF shock protection!), there were also an ETA 980 in its probably last incarnation, a GUB 09-20, a Förster 630, a Timex M78 and a Bifora 55.
If somebody knows a watchmaker in the Munich area, who is capable to fix chinese mechanical watches, please send an email to me, I will forward this info to Mr.Keilhammer then.
Thank you very much for that great donation!