I dont have anything that old but I have a 1982 kenmore that i rely on and a 2000 singer thats fairly new I'm iffy on. My parts are on backorder so I can't work with her yet. If my kenmore crapped out I would be devastated
I have a 70's Necchi I took in repaired her she has several stitches but not computerized
she has switch under the plate that would get flipped seems to have worn for bobbin winding...
My knees I could not handle a treadle now bad enough best on white they are knee feeds