I believe this is a Cufflink or a button. It is very small and very ornate. Not sure if it is Silver or Tombac. It was dug on a site near an old Home dating to 1805. I would love to hear what the experts have to say about this one. I am very happy to have found it.
Steve in PA I went back today looking for the mate and could not find it. I did manage a couple of decent finds from WW1 era. Kind of a slow day target wise.
Given the look of the piece, and the decoration, it is likely 1790's. Assuming it is coin silver, and assuming it was made in Natchez, it was probably made by Lewis Evans.
He was the earliest silversmith in the region, and later became the first sheriff, as well as one of the region's largest landholders.
BB you are right. Since digging it has tarnished to a dull black color. I went back to look for the other half, but couldn't find it. It is one of the oldest finds I have. Thanks everyone!