Bojangles, that cabinet is beautiful. The burled inserts are so lovely. Your husband did a great job.
Annaquilts, the treadle and the 60s machine that could be original. Last summer I picked vegetables at an Amish farm. The lady of the house took me inside to show me her daughter's new sewing machines. They were new treadles.
Quiltgranny, I haven't needed new feet on my 301, but the bobbin winder tire was easy. Just pop it off. I just checked two sewn strips I did with my 1/4" foot. One is a 1/16" inch off with three seams and one is exact, so mine much be okay.