before marketplace or craigslist I start really local with what I'm willing to 'let it go' is use the local town free giveaway list on facebook. we have a small community, but the big cities are organized by neighborhood often so still local
I loved having and using my vintage machines, hand crank and treadle, but it was also part mob mentality as they were very popular at the time. I'm glad I let them go. One I bartered for (can't do that on the free lists, they are no strings) and got a nice pile of 1800's reproductions. best wishes!