Civil War Eagle Pin? Heeeelp!

[HEAVYMETALNUT]

Dug This At My Old Park Today.it Appears To Be A Pin.same Size As A Us Quarter.HAS THE OLD STYLE EAGLE ON IT.looks Like The Words"united States Of America Around The Rim.any Ideas? I Can Use Some Help On This One Please!
Dave

[HEAVYMETALNUT]

No Comments On This? Please Somebody?
Dave

[NB Digger]

Dave,
The closest match that I have made are War of 1812 style "dog tags"!! The Eagle device is most similiar to those...so my guess would be a later style "dog tag"...hence the hole at the top! Just a guess though!
Travis