41 Short Rimfire
"U" - UMC  H/S
The 41 Short Rimfire was Introduced in 1863 for the National Arms Co. Derringer. The U.M.C. Co.
or Union Metallic Cartridge Company made these specimens around 1885.
They used a "
U" with lines
on the top of the letter,
before they merged with
the Remington Company.
The Remington Company  used  a "
U" without the
lines on top of the letter.
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