Vintage sewing machine rescue is legitimate, in and of itself! I am at around 100 machines myself, although I realized this past year or so I was way beyond capacity (living in an old beach house), so at least half of the machines will be finding new homes as I get them up to snuff. Recently I got my own Centennial 15-91 into regular use and it is a joy. And fast! I also had to do some rewiring but that is a trifle- wiring is a consumable like belts (on belt machines) or bobbin winder tires.