Value depends on condition, location, rarity and the current market. Unless it is a super rare model or in pristine condition, it
is most likely worth whatever a common Singer machine of the same era goes for in your area. Where I live, that is anywhere from free up to $100
for common treadles and up to $150 for hand cranks. I will not reply to emails asking what your machine is worth.
Email me at kelsew@gmail.com with "Domestic Info" or "Demorest Info" or "Davis VF Info" in the subject line.