Thanks for the votes guys! I've been back a few times since finding it and have found several round balls and tons of modern shotgun shell heads. I'm thinking the round balls may be Rev War period. The property is near the Battle of Camden(1780) and there was a lot of activity on this property. I'm still trying to figure out why this button was there! When I first dug it up I thought I saw a crown on it. Didn't realize what it was until I got back to my phone I left in the truck. Just goes to show you never know what you might find. I have spent many days on this property and not found a thing. Thanks again and good luck out there!