Smokey mountain mystery

I found this item with a metal detector on an old home place. It does not stick to a magnet. It hit on the 10 cent setting of the metal detector. It was about eight inches underground. There is a letter "A" on the front. I am not sure it is a cameo, but it is very similar to one. Any ideas on it would be very helpful. On a food scale it weighs 19 grams/0.7 ounces. I have searched on the Internet for old buttons, lead seals, coins, buckles and cameos without any luck.