In my travels, I recently found a very rough brass barrel mystery lens.
Diameter of barrel is approximately 2 5/16", length is approximately 3 5/16".
Only engravings are a matching "1876" on both barrel and outer rim of rear lens.
Front lens is missing. Rear lens is jammed/crossthreaded into barrel. Lens rim is pretty beat up, glass is very dirty and has a couple of tiny chips near the edge.
Can anybody please help solve this mystery?
See pics.
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