I figured I'd go through all my pennie's and weigh them. I came across a 2011 no mint mark that weighs 2.36. I found a few pennie's that aren't weighing what they should weigh and can't find anything online to see if they could possibly be worth something.
Hello and to the Forum! Your 2017P cent appears to have been deliberately damaged - sanded down with something abrasive to reveal the zinc core underneath. No ectra value - a spender.
Thank you!!! If a coin appears to not have any flaws, but it's way over or under the normal weight are those error coins? I found a few that are 3.16 grams
These would be underweight for sure because someone has removed the metal from the coin. Your 3.16 cents are probably pre-1982 copper cents. There is a certain tolerance for deviation from the mass so a small difference is no big deal, approximately .10-.13g.
Welcome! As stated there is a tolerance above and below the standard weight, and even if slightly out of that there really is no premium. The odds of finding something good by randomly weighing coins would be infinitesimal.
wow, we have been seeing a rash of these sanded down cents lately.. the zinc coin has just been defaced (literally) and your other heavy copper coin is within tolerances just on the heavy side.
There are a lot better ways of finding interesting varieties or errors than weighing random coins.
Read up on the minting process and begin to learn what a normal coin should look like - then you can spot the rare few that are truly different and not just damaged such as this one.
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