I also found just the rear part of a Brayton awhile ago, it is missing the lens, this is different than others I have seen, it has a srew for elevation adjustment instead of an elevator (maybe it was for a 1903 pump?) -
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[Linked Image]

A few years ago I found a complete CICO Tubeless Scope circa 1910, I had this one at one of the WI Savage Fests. It's a little different, it uses a small lens with holder that clamps over the aperture of a standard type tang sight and a lens behind the front sight and them magnifies the sight picture over the standard barrel sights, it's about 3X to 4X -
[Linked Image]

[Linked Image]




Gene