Hello all. Recently pulled this coin from a bracelet. I have never dealt with ancient coins. To me ancient coins are my 1888 Indian heads. I have spent about 15 hours trying to find this exact coin. It appears to be Julia Mamaea, but can't find an exact match. The bigger question I suppose is how can I tell if it is authentic. It weighs 1.54g and the size of a flattened nickel. Any guidance is greatly appreciated.
That coin is copper and very underweight. I suspect it is a limes denarius or a (probably ancient) forgery. It's supposed to be this one: Julia Mamaea, AD 222-235 Roman AR denarius; 3.27 gm, 18.7 mm Rome, AD 231, 12th emission Obv: IVLIA MAMAEA AVG, diademed and draped bust, right Rev: VENVS VICTRIX, Venus standing left, holding helmet and scepter; shield at her feet RIC 358; BMCRE 713; Cohen 76; RCV 8216
You guys are awesome, thanks! I think the coin thanked me when I liberated it. I'll hang on to it for now. Won't fit in a vending machine anyway. Thanks again.