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 Replies: 7 / Views: 1,103 |
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Valued Member
Italy
244 Posts |
Hello, what do you think about the difference between these 2 1965 Half dollar ? They are both close to AU, but the right coin is more clear and opaque while the left is much more similar to a copper-nickel, also the weight is just a bit different, the right is 11.54, the left is 11.67, using my coins balance, that may have .02 .03 grams of error. Did you get experience w/ these differences ?  |
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Pillar of the Community
United States
2669 Posts |
The difference is around the same difference in weight between a 40% silver clad and a copper-nickel clad (~16g), taking into consideration your margin of error. Which is weird, because they didn't mint copper-nickel clad until 1970 as far as I know. In 1965 they had just started minting the 40% down from the 90% so if anything, I would expect a weight difference of an entire gram and hope the left 1965 was an accidental mintage of the 90%.  Special mint set version, maybe? That being said.. the 40% is supposed to weigh 11.50 grams. I don't know what would cause a weight of 11.67.. so I'll wait for some experts to 'weigh in'.  |
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Pillar of the Community
United States
3507 Posts |
It looks like normal toning on a circulated example but I can only go by the pictures and they do not capture the color as well as they could. The odds of a copper-nickel planchet being around years before we made the switch from 40% silver to copper-nickel clad is slim to none.
Thanks,
Bill
Edited by foundinrolls
10/11/2008 4:26 pm
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Moderator
 United States
190400 Posts |
I will say those weights are probably within the combined tolerances allowed from the mint and the scale you are using (+0.35% and +1.4%). I will say the colour difference is simple tone variation. Many 40% coins in my Kennedy collection have various toning.
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Pillar of the Community
United States
6399 Posts |
Hi Rosso, I think both the weight difference and the color difference are within normal variation for silver-clad Kennedy halves. I always weigh the 1965 coins I find while roll-searching, hoping to find one of the 90%-silver off-metal strikes. I've seen many coins weighing well over 11.6 grams, as well as lightweight coins down in the 11.3-gram range. I agree with Foundinrolls, there is virtually no chance you have a copper-nickel example of a 1965 half. The 90% silver examples however do exist and are quite valuable, so keep checking the weights! They weigh the same as a 1964 Kennedy, right about 12.5 grams. |
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Valued Member
 Italy
244 Posts |
thanks guys for your answers, appreciated.
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Pillar of the Community
United States
2669 Posts |
I apologize.. I had not meant to imply that the actual reason for the difference was because it was on a copper-nickel planchet. I'm glad Bill and everyone else cleared that up.  |
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Pillar of the Community
United States
7629 Posts |
Yup, I'm with Bill on this. If it were a 1969 or 1970 piece, there could be some chance...but being so early, I don't think it's possible.
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Replies: 7 / Views: 1,103 |
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Posted 10/11/2008 4:25 pm
