Need help on button ID?

[A/CMan]

I was hunting today with my ace350 and found this less than 3" under the ground, I think it's civil war but not confident about it, thanks AC

 

[duggap]

I am afraid your button is post civil war. It is called a great seal button. They came out in 1903 and are still in use today.

 

[A/CMan]

Well heck, can't win them all. Thanks