Welcome SBLL885.
Have you been able to find any additional information about your machine?
It looks like a cute machine and might be a very sturdy machine. Are you needing a manual for it? The body shape appears different than most 15 clones I've seen. The stitch length regulator, feed drop knob and tension assembly look very much like some machines from the 1960s. I would imagine threading for it would be like the Singer manual for a 115 found at singer support site. (This manual is Not for the 115 models made pre-1935.)
Another difference would be the Pressure Regulator on your machine is more like the quick release mechanisms popular on mid-1900s machines.
Janey - Neat people never make the exciting discoveries I do.
Last edited by QuiltnNan; 03-05-2019 at 07:10 AM.
Reason: shouting/all caps