It looks like a Singer 99! Lucky you!
The bobbin wire tire should be readily available. As posted above, Sew-classic has the bobbin winder tires and light bulbs if you need one... She also has good class 66 bobbins. I some times buy the ones from Walmart just to take apart and repurpose.
I have a 99 I converted to hand crank. It makes the best buttonholes so I use it mainly for buttonholes.