cuff button ID please

[boondocker]

Found this yesterday, posted it in todays finds, thought I would post it here also. It seems to be made of brass or copper, maybe even bronze. Any help would be greatly appreciated. Thanks Dean

[vayank54]

Just saw this. Are you sure it's brass or copper. Because of the dot beside the shank I'm thinking this is a more modern button. If it is brass or copper and is old it dates back to the 1700's or earlier. I could be wrong but from the pics I really don't think it's that old.