CW button

[turfnsurf]

Hello, I need help with this latest find. I have seen a lot of designs but want to ask if anyone can tell exactly where this came from.

 

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[fyrffytr1]

It's a General service button and dates from 1854-1901.Yours appears to have a raised shield and that would date it after the civil war. Can you read the backmark?

 

[turfnsurf]

Thanks for the info. It has no writing on the back.