I don't know what I was expecting to see, but here's a look at the windings from a rebuild I'm attempting.
Cloth friction tape to repair, don’t use plastic tape, then spray them good with electrical insulating varnish. I got a can at Grainger. Mine looked similar, not quite as bad. I also re insulated wire leads by braiding linen cord over frayed areas and then varnishing. I would show you but I can never get pictures on here.