After looking at quite a lot of pictures, I have come to the conclusion that I don't have even a vague guess who might have made it. The use of bicycle type pedals on that kind of a saw is almost unheard of in the US, all the major makers were using lever/crankshaft type foot power for scroll/fret saws. The rocker arm is also very odd, no one used a split design like that that i can find, generally that would be the first hint, as everyone had their idea of the way to make that easily failing part better than everyone else, but yours is different than anything I have seen so far......
