That looks almost exactly like my Mom’s Singer, which she got for a wedding present in ‘54, except that Mom’s has an electric motor. It is an extremely good machine with attachments to do almost any type of stitch.
If you decide to electrify the sewing machine , they have a rheostat that will adjust the speed of the sewing needle .
Set it up so that you can operate the speed with your a lever at your knee .
That way you still have both hands on the working piece, and can still adjust the speed of the machine .
My Great Grandmother had one identical to the photo, she even had the "buttonholer" attachment.
When I was in college my ex bought a White portable machine and I lugged it all the way from downtown Milwaukee to the upper east side. It looked just like the Singer treadle machine except for a small electric motor to drive the mechanism. I found out later that Singer had finely changed the design of their machine and sold the patterns and core boxes used to make the cast iron parts and the drawings for all the inner works to a Japanese firm. The import (Japenese) machines were identical to the old Singers (built like a brick outhouse) and even the accessories like Great Grandma's buttonholer bolted on and worked fine. These machines were considerably cheaper than Singers and were imported under various names (American Rose? and others). There are probably scads of them laying around in flea markets, garage sales, and estate sales. Keep your eyes peeled.
It wouldn't be too difficult to change the motor out for a 12VDC (with a little luck the old speed rheostat might even work for you) and run it off a solar cell/golf cart battery. Building a stand to hold it and adding a treadle powered flywheel driving a belt to the hand wheel doesn't sound too difficult either.
Regards,
GtG