Military?

[XP-Man]

I do not know much about military buttons. I found this in a yard that I had access to. The shank is off of it and there is no writing on the back its just flat? Any Ideas?

I RATHER BE DIRTY

 

[wheatfinder13]

Looks like a wwi era collar disk

 

[releventchair]

Guessing WW2 brass collar pin. Branch of Service Insignia

 

[XP-Man]

I didn't want to scrub the back of the button and it was filled with dirt but once I soak it in water the clump came off. I thought the button has nothing on the back of it but it had these posts I cleaned it by zapping it

I RATHER BE DIRTY

 

[Mackaydon]

C.P. Co. stood for the Charles Polk Co. located on 5th Ave., NYC.
Don....