That looks almost exactly like my Mom’s Singer... 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
My sister isn't interested in Mom's Singer so I'm getting it. Already have it actually. That's interesting about Singer's engineering specs being sold to Japanese manufacturers. That means replacement parts and accessories will always be abundant. I don't need to build a stand though because it has a complete wood cabinet that it folds into when not in use. Found this pic of one identical to it minus the matching seat which has storage under the cushion.
Here is a closeup of the foot control identical to the one on Mom's machine.
The drawers even lock. There is a keyed mechanism between the two drawers. Found the key in one of them and it works. Mom collected a bunch of accessories like a buttonholer, a zig-zagger and others. Not to mention a supply of elastics, button snaps, garment trims, needles, bobbins and lots of stuff I can't name. The 1960s prices on the packages are amazing.
It looks so much like the one pictured at the top of the thread I just wondered if the manual treadle system would "bolt" right in after removing the elec. motor. Like swapping engines that's probably not as easy as it sounds. Gonna need to find or manufacture the right "bell housing."
Someone upthread said theirs was AC or DC so I need to take a closer look at mine (Mom's) and see if it already has that option.