Sempiternal

With graduation looming I may actually have time to start some projects. I pulled out the Singer 513 that my grandmother left me and it's really seeming tired. Probably could use a little TLC, but I would still like something a little more sturdy. Local craigslist has a pretty Sewmor 202 that looks to be in decent shape that comes with a few accessories.

Is $50 a decent price, assuming it runs and just needs a little oil/grease? Any one use these? How do you like it?

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There's also a bunch of older Singers (including some treadles) and this Kenmore that also caught my eye:

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I'd really like something that could handle canvas/heavier material on the occasion that I have to do a patch on a horse blanket (luckily the little crazy redhead is pretty easy on her wardrobe).

It's been a long while since I've sewn anything!