Found this machine for sale about 2 hours from us. The seller said they thought it was a Singer, but the name's worn off.
I'm reasonably sure it's not a Singer, but there are a few clues that make it look like I could be wrong.
It looks german to me for some reason...
Things like the way the thread take-up lever plate is secured, the style of the bobbin winder and the quality of the woodwork looks German to me.
The serial number, the lock hardware and the presser foot tension look Singer-esque to me.
The lack of a Singer badge makes me think not Singer... the stitch length looks wrong too, but I could swear I've seen "one" Singer like this, but i can't think of which one it is, and how do you Google that.
Position of the treadle belt looks "wrong", but perhaps I'm looking at this machine like it's newer than it is?