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 Replies: 11 / Views: 5,907 |
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Valued Member
United States
135 Posts |
Hi people
From my understanding, the side of a Proof coin does not have any mirror reflectivity or any cameo. It is basicly MS. Is this correct? Thanks Coin Community.
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Pillar of the Community
United States
1963 Posts |
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Pillar of the Community
United States
4211 Posts |
Not quite sure I understand your question but I think the answer is no.
MS refers to Mint State examples.
PR stands for Proof examples.
A proof can't be an MS coin and an MS coin can't be a proof coin.
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Pillar of the Community
Australia
7096 Posts |
The Minting process for MS or Business strike and Proof PR coins is a completely different process.
A coin cannot possibly be MS and PR at the same time.
I think what you are referring to is Business strike "Cameo" coins with only one side of the coin showing the Cameo effect.
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Moderator
 United States
56855 Posts |
A coin is struck using three dies,obverse and reverse as well as the collar die. I don't think the third die differs from MS to PR although I think it should. John 1  |
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Pillar of the Community
Australia
7096 Posts |
Sometimes Proof dies are used to strike Business strike coins but never the other way around.
The Planchets used for proof coins are treated differently to business strike coins as well.
So sometimes you can get a business strike coin that is "Proof Like" because either a proof die was used to strike the coin or a proof planchet has been used with a business strike die.
Edited by trout1105
01/28/2017 7:03 pm
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Valued Member
 United States
135 Posts |
What I meant to say was the collar part, is the collar of a proof coin proof?  |
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Pillar of the Community
Australia
7096 Posts |
Quote:
What I meant to say was the collar part, is the collar of a proof coin proof? That is a really Good question and is something that I honestly haven't given any thought to  On most proof coins the rim of the coin is usually very well defined and quite square whereas on a business strike coin the rims are usually quite rounded in comparison. I am not sure if it is the extra pressure and the multiple strikes that go into producing a Proof coin that causes this or that the collars themselves are different to those used to strike business strike coins. Like I said a very Good question  |
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Pillar of the Community
United States
1000 Posts |
Good question. That's what I initially thought you were asking, but I wasn't sure. It makes sense for special obverse and reverse dies to be used in minting proofs. I haven't heard about different proof collar dies, and I imagine if they were different, an error would have created a new variety by now. I do know that planchets for proof coins are polished before being struck, but I don't know if this includes edges. I suppose the best current denominations to look at now are nickels, cents, and small dollars because the reeding of other denominations might obscure a polished surface.
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Pillar of the Community
Canada
4911 Posts |
the collar shouldn't be any different from a business strike, I highly doubt it goes through any special polishing etc. that a proof rev or obv die would..it'd be pointless. BUT although the collar isn't different, the reeding struck up by the collar is always much fuller than a business strike, not because the collar is different, but because of how much stronger the strike is.
Feel free to call me Will.
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Bedrock of the Community
United States
17884 Posts |
The edges of a reeded edge proof coin will not show "mirror reflectivity" but on plain edge coins such as the cent or Nickel yes they can. The plain collar can be polished like the dies are but you can't really polish the surface of a reeded collar.
One thing that tens to prevent the edge from being a mirror on the plain edge coins is the fact that after two strikes which really forced the coin against the collar, the coin is the PUSHED up out of the collar scraping the edge of the coin against the collar on its way out.
Edited by Conder101
01/30/2017 08:41 am
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Bedrock of the Community
United States
12437 Posts |
The proof golden dollars(Native American and Presidential series) utilize a special three segment collar for adding the edge lettering. For business strikes, the edge lettering is added by a secondary process and the coin is struck with a plain collar.
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Replies: 11 / Views: 5,907 |
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Posted 01/28/2017 6:36 pm
