need some help

[mamo]

i fond this in my yard in Sheffield PA it"s a button but i need to know what kine it maybe and the year?

 

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[Tin Nugget]

Regular Army. Put it on the Whats It forum. Any info on the back?

 

[TORRERO]

I think these were eather early airforce or Army service style.
Started WW1 era I think, and continue in service to this day.
Not really rare, but pretty.

 

[mamo]

Regular Army. Put it on the Whats It forum. Any info on the back?

there is but cannot see it