Hello everyone, I have a question maybe some of you can help me with. I found this 1892 Penny coin roll hunting today. I think I have done my research on it. But I need your opion , expertise on the matter. After 1864 the Indian head penny. Should be weighing 3.11 grams correct?. So I have weighed this penny. It comes out to 2.9 grams. Should I try a differnt weighing method to get a precise weight. Any info would be great and helpfull. Thanks again.