Calmostar84 Posted July 14, 2022 Share Posted July 14, 2022 (edited) Off metal coin i found at the local antique store. I paid 3$ for it just because it appears as a genuine error in my opinion. ItsvNon magnetic. Weighs 3.00 grams. Appears to be an improper alloy mixture consisting of mostly tin or zinc and very little copper. Is this something that would be recognized as an error? Is it worth getting authenticated/graded? How collectible/rare if it is authentic off metal error? Did i overpay? Any other thoughts or comments? Edited July 14, 2022 by Calmostar84 Link to comment Share on other sites More sharing options...
Just Bob Posted July 14, 2022 Share Posted July 14, 2022 Plated, most likely. Coinbuf 1 Link to comment Share on other sites More sharing options...
Coinbuf Posted July 14, 2022 Share Posted July 14, 2022 Agreed it may well be a mercury plated coin, popular high school science experiment many years ago. Highly unlikely to be an off metal coin. Link to comment Share on other sites More sharing options...
Calmostar84 Posted July 14, 2022 Author Share Posted July 14, 2022 (edited) Its under weight not over.. Edited July 14, 2022 by Calmostar84 Link to comment Share on other sites More sharing options...
Mr.Bill347 Posted July 14, 2022 Share Posted July 14, 2022 Since this coin is 95% copper and 5% tin/zinc, if it were plated it should weigh more, not less, I think.but if the surface was removed , say by acid, it would weigh less. nevertheless, it is post mint damage, and even if it were a DDO or a BIE variety, it would have been deemed relatively worth 1c Link to comment Share on other sites More sharing options...
Oldhoopster Posted July 14, 2022 Share Posted July 14, 2022 It was plated. The plating can be thin and add negligible weight. In addition the standard weight tolerance for a cent is 2.98-3.24 grams so it may have started on the low end of the weight spec. Also depends on how well your scale is calibrated and leveled. Coinbuf 1 Link to comment Share on other sites More sharing options...
