Henry,
I don't know if I will use it. But, it is only right to keep it iin good repair, right? The bobbins just crack me up! Like little shuttles. I know this was one sturdy machine for all those years.
I have a twenty-some year old bernina 830 that I would go back to if I wanted to use a non-computerized machine. My second machine I ever bought. I still love that machine. A perfect stitch and all those wonderful feet that work great.
Are you going to use your grandother's all the time? The treadle is pretty cool! So earthy.