She came home with me!!!!
Beautiful and amazing condition!! Serial number dates to 1886. She is my first treadle. I knew I was waiting for the right one, when I saw it I knew. My husband really loves it too. He is a woodworker and thinks the cabinet is fabulous. He thinks it is built of Sweet Gum with burl veneer panels. Unfortunately, I think someone added a coat of varnish to the cabinet but did it well. I love the original cabinet pulls that say "Singer". I'll need a new belt and will have to do some very gently cleaning of the machine. But it moves freely, no rust, mostly good decals except for the front of the bed.
I will post pictures soon!