Maybe button

[tuck02]

Found in corn field
Any ideas furst photo is the front second is back
its very thing

 

[Full Metal Digger]

Wow, tiny little guy but looks more like a rivet head to me.

 

[Tony Two-Cent]

I agree that it could be a rivet head or possibly a nail head that has popped off. It looks too small to be a button, even a cuff button. I find rivet heads all the time in farm fields. They often ring up like Indian Head Cents.

 

[fyrffytr1]

What makes you think the flat side is the front? Is there a design or lettering on it? I think I see two spots on your "front" picture that a loop could have been attached to. Being that small could it be a shoe button?