1983 Silver penny?? Is this an error! It weighs out 2.54g

So is this an error or dipped? I know it's legit. I put it on the scale and it weighed out correctly. All the features are on it (Lincoln, FG, etc). I don't think it's been dipped but maybe you guys can chime in and compare. I took a close up so maybe this will help determine if this is an error? I do see a pin hole on the reverse side (left of steps). Also, looks like corrosion on the bottom.

Thanks for your help

 

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nearly 100% chance of a mercury dip, or some kind of plating.

 

I would say science experiment but that wouldn't take .6 grams off the weight. Maybe an expert can weigh in. Other than the weight change I vote science experiment.

 

I found this in a roll of pennies today. I thought at first it was a 43' steel wheatie.

 

The weight is within the range for zinc cored lincolns, maybe a fraction on the high side of average. The key is the area on the coin's reverse near the "C" in cent where an electrode alligator type clip was applied for plating. Plated coin IMO.

Jim

 

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<<I would say science experiment but that wouldn't take .6 grams off the weight. Maybe an expert can weigh in. Other than the weight change I vote science experiment.>>
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According to the Red Book, the coin is .04 grams too heavy which might be the added metal plating. ​

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The weight of a new zinc cent should be 2.50 grams +/- 0.1 grams according to Breen's Encyclopedia, so 2.4-2.6 grams would be in tolerance, although a bag of them should avg. very close to 2.50.

 

Has anyone considered cent struck on a dime planchet? There seems to be a flaw on the rim as well.

 

Pin hole on step?

 

rounded:
nope, and then

1) the details wouldn't be fully struck up-- smaller planchet
2) There would be the copper core showing on the rim

 

thanks

 

Wow....
I totally looked at the weight for a pre-1982. Obviously not my day that day.

 

Too heavy to be on a dime planchet (2.27 grams) and too well struck and struck to the full diameter. Post mint plated.