I'm going through an accumulation of coins for a friend that runs estate sales. The lot is mostly common world coins, some silver, a few from the late 1800's, & some world notes. This coin was the only one of it's kind in the lot. It's non-magnetic & weighs 3.3 grams on my scale. The planchet is thicker on one side than the other. I don't know anything about cobs & hope someone can help determine if it's real.