I've exhausted google with no luck. This is my last resort. I believe it's nickel or silver plated copper about 3.5" x 2.5". Just a plain Napoleonic style eagle with nothing in its talons facing to its left. It does have a curve to it, but it seems too lightweight to be a waist belt buckle. There was a standard buckle hook on the reverse side until it fell off after digging it up. The site is from 1820-1890 gunsmith and mills. I've found bronze pistol barrels, flintlock mechanisms, and early 1800's flat buttons in the same area. It's not a battle site or camp location. Home site. Upstate South Carolina. Please help, and thanks!
