Found this button today, need a little help

[gunner45]

I found this button today at a yard sale, I wish I could say I dug it with my metal detector but I didn't. The button was found in northern Maryland and was never cleaned. He said he believe's its pre civil era.
I can't find much info on it so I thought I would show you guys and hopefully get some help.
Thanks in advance

 

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[Evolution]

Definitely looks pre Civil War. Looks to be made of pewter.

 

[leslie(nova scotia)]

Not a military one for sure. Nice scoff.