Cody:
I'm convinced its for real, its almost identical to a bow of a friend of mine, thats dated 1938.
Bjorn:
I doubt the backing is glass, the bow is too early for glass. it could be plastic, baleen, or fiber. Unless the owner had glass applied at a later date. Who knows, the more Hill bows I see the less I know about them. You here one thing that should narrow a few examples down to a bowyer then you see another that blows that idea down the tubes.
I took pictures of one today that did just that.
Bob