Wow Leaha, you are looking for a Pfaff treadle! I love Pfaff's, I have 4 of them now -- no treadles! The oldest one I have is my Mom's 130 -- it is what I learned how to sew on. I too would love to have a Pfaff Treadle!
I am on my way right now to look at two Singer Treadles. The lady says one says on it 1892.
If any of you get a chance look at Craigs List for Sacramento, Ca # 1870546855. She wanted $100 each a couple weeks ago, lowered the price to $75 each last week, and now they are $50 each.
Nancy