Is this Civil War or something else.

[Riggleman]

Found less than 20 ft where i found part of a Confederate horse bit. I believe it is made of copper but may be or have white brass plating. Has a serial number.

 

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[Icewing]

I'm going to go way out on a limb and say it reminds me of a faux buckle snap fastener from a purse.

 

[old digger]

Hard to say, maybe to the back of a suspender.