There are quite a few vintage, hand crank, machines for sales on the site below, just create an account (free) and click on "Kimberly and Darrell Lynn" grouping. I don't know much about old machines, but there are foreign and domestic, don't know how the prices are. The only catch is they're only available for a few days so if you want to look or buy, you have to act fast.
https://www.onekingslane.com/invite/angieterry