Military badge/button ID help!

[tarheeldiggin]

Can't seem to get an ID on this badge. Slightly larger than a quarter and made of brass or copper. Center post is threaded. Looks like maybe a general infantry button perhaps - if so, from what era? Any help would greatly be appreciated.

 

[taz42o]

Post ww2 infantry collar disk. Neo-Type 3.

http://hglanham.tripod.com/metalinsignia/collardisk1.html

 

[widebody]

[size=large]those rifles look like flintlocks. the newer one probly are crossed m-1's. for sure old army. nice call taz42o.

HH[/size]

 

[mortarman]

I don't think it's "post" WWII cause all of those seem to have the pin backs or spike if you will. His is a "screw" type which is either contemporary to WWII or pre WWII.

 

[Aarong81]

I have been trying to narrow down the time period when this was made and so far it seems it is post WW2. The backstamp 'AGO G2' will help determine when it was made. I agree that it looks pre-WW2 but looks can be deceiving.

PS:
AGO G2 could very well be a system used to refer to a 'time period', it is also a code system used by the US Military.
The basic staff of a general-commanded group (which normally includes: the entire Army or Marines; a specific Army (1st Army, 2nd Army) or Corps (I Corps, II Corps, etc.); a Division; and a Brigade) had four sections: G-1, Personnel; G-2, Intelligence; G-3, Operations; and G-4, Supply. During World War II there were two additional staff functions at regional headquarters: G-5, Civil Affairs and Military Government; and G-6, Public Relations and Psychological Warfare
SOURCE

 

[mortarman]

It might help to know where it was found.