Welcome to CT!! It looks like a circulated 1982D Small Date Zincoln to me. Can you post a pick of this coin (obverse side up) on a scale? Like stated above there has only been 1 confirmed 1982D Small date copper ever found. A unicorn coin so to speak. We see new members post threads like this several times a week and none have ever panned out.
Welcome to CT!! Your coin is a Large Date. It is normal t have a 1982D Large date weighing 3.1 grams. On another note. It would've been better to make a new thread for your coin. It's kinda frowned upon to hijack someone thread.