Unique Copper Penny Looking Tip Tray?

I have no idea what this is for sure but it could have been a tip tray, a collectors plate, almost anything? I can only make out the letters, JS in a shield, on the back and Liberty on the front. The material looks like that of an old penny, as you can see. Rare? It weighs 1 lb 9 0z. and is 6 inches wide and 5/8 inch from bottom to top edge. Found at an estate sale in Wahington DC area. Age unknown.