Problem is, it appears to have been converted to electric. Once you do that, the value goes down. My grandma used her treadle to the end of her life. I used to sit and watch her sew for hours.I have a few of those old Singer treadle machines. They bring around 250 dollars at auction here. That 1 looks to be dated around 1890. Find the serial number and you can run it on singers website.
I had the same exact sewing machine and I brought it to the antique store it is worth nothing