I’ve recently acquired an old violin and included were two bows. Both too short for the full sized instrument. One is for a 1/8 size and the other probably for a 1/2 size.
I find no markings, both have brass looking ferrules that are not magnetic. They both have a frog alignment system that I can not find any information about after many hours of searching.
The area that the frog slides along the shaft of the bow has a tongue and grove. The bow has a raised square rail cut into it and the frog has a matching notch cut into it.
They are somewhat hex in shape at the frog end but become round for the remainder of the shaft out to the tip.
I’ve become even more curious after finding zero information or images of these bows.
Has my description been clear enough to grab the attention of any knowledgeable readers?
I’m a new poster with this forum but it appears I could include images if necessary.

They were a part of a homemade 'lamp' I bought at auction. An original Stroh violin was mounted to a base and had these two bows mounted in a cross formation and the horn/bell of the violin had a light bulb in it. It’s not a lamp any longer but can still brighten a room.

I’d appreciate any help in finding clues to identify these bows.
Rick