Silver content of U.S. Coins

Something about this doesn't seem right (hint: it's the ASW). This is from Great Collections website...

 

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Why not?

When they changed the alloy they didn't generally change the weight so there's more silver.

 

Do the math, then respond.

 

Not to interrupt but I get .4074 troy oz. at 99.9% of 12.685 grams. Also, they note that GC has sold 50 2021-S coins in the last 15 years - do they have a time machine?

 

That's what I get - 0.4074 troy oz.

Every website I've looked at says 0.364 troy oz ASW. The Redbook says 0.364. They all say 12.685 gm and 99.9% too.

The COA for a silver proof set says 12.685 gm and 99.9% but does not give an ASW.

Good math or Redbook math...your choice.

 

I got it - they are using the weight of the clad Kennedy's at 11.5 grams - that translates to .364 troy oz. The silver coins simply weigh more. @Burton Strauss III was correct.

 

I know they weigh more and I know the ASW should be 0.407 oz, NOT 0.364 oz. Which is the point.

wth was he correct about?

 

He said it happened when they changed the alloy, which changed the weight and also the amount of silver. Either way you are right, the Red Book is wrong, and I imagine GC simply took their information from the Red Book.

 

oh, and 99.9% of 11.5 gm is 0.3694 not 0.364

 

He said the weight "didn't generally change". It did change. so he was incorrect. He was right about there being more silver though. But for all the wrong reasons.

 

grrr at typing too fast. Off to get a G&T. Thanks for mathing with me.

 

All good. Just to finish, the 12.5 was the weight of the silver proofs prior to 2019 - the Red Book actually used the 11.5 weight of the clad coins. The Red Book got it completely wrong, and because GC just copy/pasted they were also incorrect.

 

I thought so too, but no, they didn't use 11.5. That would give 0.3694, not the 0.364 that they do claim.

From my 2022 75th large print edition...

 

I mistakenly wrote 11.5, it should be 11.34 grams for a clad Kennedy. Then the math works.

11.34 * .999=11.32866 which converts to troy ounce = .36422488

 

I recently received a pleasant surprise which is still a mystery!
One of the quarters deposited in a Walmart payment machine was repeatedly rejected when reinserted!
I just stuck the 1964 BU state coin in an empty pocket.
When addin the coin to my change bucket, I happened to see Copper color along one edge of the coin.
Your weight post stimulated a question!
IS IT POSSIBLE FOR A 1964 "TRANSITIONAL" U.S. 25 CENT TO BE A CLAD/SILVER PIECE?