I picked up a model 12 this weekend, Date 1890 +/-. It is rough on the outside but I can restore that. Probably will make it straight black and possibly add Singer logo. It was seized in two area but now working fine except, to my horror, I discovered that the front assembly that the needle bar rides around was broken. Will need to remanufacture the piece, probably from aluminum, in my shop. This is not going to be easy. Tried to epoxy but that was predictably a waste of time. I will also have to drill out the pins to insert a new casting.
I picked up the machine for 10 dollars including treadle table so I guess I will have to work for it.