My new old sewing machine is fixed! The man who came out to fix it said it's a good sewing machine, better than the new ones they make nowadays. It's probably from the 1950s, possibly the 1960s. I paid $35 but he said it was worth a few hundred dollars. Even if it was worth only $100, then with his service call, I paid exactly what it was worth.
Now I can sew something. I really want to make a Ray Jardine bomber hat or perhaps even better, an insulated balaclava that my friend has a pattern for. But I'll probably start with boring stuff like hemming my pants.