I picked up this little coping saw yesterday at a thrift store. Surprisingly, it still retained the original thumb screws for attaching the blade--a nice feature that could easily have been lost as it passed hands. The end of the frame opposite the handle is curiously elongated. I don't know what the purpose of this feature is, as it doesn't add to clamping pressure on the blade. Anyway, it's solidly made.
I can't find anything on the web about the company behind this saw.
Update: Mister G reports that his Dixon jeweller's saw has the same projection. On a smaller scale, so do my own (see my previous post). So, I think the visitor's comment below provides exactly the explanation for this feature, providing more precise control for fine jewelry work.