I just won this for €26 (!) on Ebay:
And tomorrow we pick it up. There was only this picture on the auction, it seems to be in very good condition and to have manual and at least a few attachments. I do hope it works but it will probably need some adjustments. Luckly I have a Singer dealer at 5 minutes walking distance from home.
I believe it is a
15-91 15-88 / 15-89 / 15-90, just from this picture though, so I cannot be sure.
Now I’m off to have a drink…