I'm just learning how to do variety attribution on late-date large cents. I'm not very good at it yet, so you'd probably be better off having someone more experienced help you. For example, 1842 has 9 different varieties. My thought is if you could attribute your coins that would help verify authenticity. After all, what counterfeiter is going to take the time to counterfeit an 1842 N6 in circulated condition.