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 Replies: 19 / Views: 3,073 |
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Moderator
 United States
56855 Posts |
Are all S mint copper, or are some zincolns? I am thinking about getting a four piece set slabbed in PR69. I am trying to get all four for less than $30. John1  |
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Rest in Peace
10197 Posts |
All are copper John. Have an extra one out of a proof set if you want to buy it.
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Moderator
 United States
56855 Posts |
Thanks but looking for a set of four. So all S mint are copper? John1 |
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Moderator
United States
187446 Posts |
Yes, all four 2009-S mint cents are 95% copper.
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Bedrock of the Community
United States
94367 Posts |
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Moderator
United States
56855 Posts |
Thanks all. John1 |
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Moderator
United States
187446 Posts |
Looking forward to seeing what you buy.  |
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Rest in Peace
United States
17900 Posts |
Let us know what you find, John. At some point my type set will go beyond 64.
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Pillar of the Community
United States
1374 Posts |
They are copper, but I've found some of them look like this  where it looks like they're zinc. |
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Moderator
United States
187446 Posts |
How do those look like they are zinc?
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Pillar of the Community
United States
1374 Posts |
Not all of them do, but take a look at bottom part of the top middle cent and you'll see that it is nickel colored rather than copper colored. IMHO it makes the coin look like its struck on a zinc planchet that was poorly plated with copper.
I've seen several coins like this and I'm not entirely sure what causes it. I'm guessing that the alloy composition of the planchet that this coin was struck on wasn't as homogenous as is should have been.
These planchets are 95% copper and 5% tin/zinc and this alloy mixture should result in an appearance like the other 3 coins in this set, but sometimes that 5% is showing through more than it should.
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Bedrock of the Community
 United States
12804 Posts |
Good discussion.
I see what you're talking about on the top coin but I think we need a different (or more detailed) explanation. Are you suggesting that there could be blobs of zinc in the alloy that got squished to the faces during minting?
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Rest in Peace
10197 Posts |
All are shadows of reflected portions of the cameo,like facets of a diamond.
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Bedrock of the Community
United States
11951 Posts |
Don't forget, the 2009 P and D Lincoln's from the mint set are also copper. Mintage 784,614 for mint set coins, 2009 S mintage 2,995,615 for proofs. And the mint coins have satin finish ...  |
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Pillar of the Community
United States
1374 Posts |
Quote:
All are shadows of reflected portions of the cameo,like facets of a diamond. Perhaps, but if they're reflections then I'd expect the look to change as the coin is rotated in hand and it does not. Like I said, I don't know what the cause is, but I still suspect some kind of planchet defect. Again, at least to me, the appearance of these coins could be mistaken and lead one to believe that they were struck on a zinc planchet with improper copper cladding, even though they are not. I guess the point is that I wouldn't recommend buying these coins site unseen. Here are some other examples     BTW, I got all of these from the same ebay seller. They were shipped to me loose in a baseball card sleeve  I couldn't believe it. I didn't return them because I didn't want them sold to someone else. Needless to say negative feedback was left  Edited by BadDog
02/09/2018 10:13 am
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Moderator
United States
187446 Posts |
Quote:
Not all of them do, but take a look at bottom part of the top middle cent and you'll see that it is nickel colored rather than copper colored. IMHO it makes the coin look like its struck on a zinc planchet that was poorly plated with copper. Ah, okay, I get it now. I think it is because bronze (95% copper) tones differently than plating (100% copper). |
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Replies: 19 / Views: 3,073 |
Posted 02/07/2018 2:13 pm
