I recently picked an old folding bike out of the trash. It's a Royce Union that was made in West Germany. It came with a single-speed coaster hub (Sachs Torpedo Jet) and typical 20" wheels. Other features:
2 piece crank
front Weinmann hand brake
white wall Vredestein tires from Holland
Brevettato "quick-release" for stem and seat
It looks like it's out of the 1970s, at least before German unification. Does anyone have any experience working on these or historical background?
I'll try to post a picture later. Thanks.