I guess its a button?

[Stoneworx]

I went to a spot ive hunted 10 or 12 times and found this button. Everything that has came out of this area has been flat buttons then this pops out! Pretty cool...
Early 1800s maybe? I l apologize for the terrible pic...
First one ive found like this from this spot.

 

[CRUSADER]

Its hard to tell from the picture, but those little bumps on the outer edge don't look button like.

 

[CRUSADER]

Maybe a wick adjuster.

 

[trapperart]

Maybe a wick adjuster.

I agree

 

[Stoneworx]

Oh cool. Thanks guys! This spot keeps giving up some goodies. Unfortunately no coins yet.