When I got the Adler, it would sew but it needed to be cleaned up. It also had a small problem, though I didn't know it at the time.
Here are a few pictures of the Adler taken shortly after I got it:
As you can see, it looked really grotty.
The last picture shows that it could sew despite the grunge.
The machine was too pretty to leave in that condition. Besides which, while I'm no neat freak it was simply too grungy to use. It needed a clean up, soonest.