Crossed muskets pin. Info please

[GatorBoy]

getting a bit overwhelmed with researching this.. hoping someone can give me a time frame. I know its brass and probably a hat pin.

 

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[BeachComber7]

Other fakes scroll to bottom shows crossed rifles with a 2 and an E.
It says "This is not a fake item. This is a post Civil War infantry badge."

 

[BeachComber7]

and this web site, tho none have a 4 and a c it does say what the numbers and letters mean.
Evolution of U.S. Army Infantry Insignia

 

[GatorBoy]

thanks