1964 Kennedy Half Dollar

I have 12 Kennedy Half Dollars. I weighed them today for the first time. They all (12 coins) weighed either 12.49gm or 12.51gm, except one. One weighed 12.61gm

I’m certain that it is not a calibration issue and they are silver.

My question is why would one of them weigh right at 9-10gm more than the rest of them.

I took pictures of three coins. The coin by itself is the coin in question. The other two are just for comparison.

TIA

 

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Tolerance on silver half dollar weight is just under .2 grams, plus or minus. Your coin is within tolerance. Congratulations, you've got 5 cents or so worth of extra silver.

 

All normal but you won't get any extra money for that heavy one.

 

It's actually .1g to .12g heavier than the others, not 9-10gm more. As stated, it's within minting tolerances.

 

Silver is high right now $6.50 each melt value.

 

High(er) than recently.

These were $12 each at local coin shops when I got into coin collecting.

 

You must have started collecting around 2011.... As a youngster I remember silver almost going to $50.00 at one time in the 1970’s.... Sure did put Morgan & Peace dollars out of reach for this youngster.

 

Early 2012 to be exact. If I started buying during the spike, silver coins would have burned holes in my pockets. Silver was about $30-34 when I got into coins.