Errors in proof coins?

Discussion in 'Coin Chat' started by OldSilver, Apr 5, 2012.

  1. OldSilver

    OldSilver New Member

    Hey everybody,

    Because proofs are made from specialy made planchets and specialy prepared dies, are there any known errors in the proof realm? I know that older proofs such as from the 1800's may have been more easily exposed to die clashes and errors of the sort so lets keep it 1950 or sooner. I know there is something to do with the 1964 kennedy proof along the lines of more or less strongly struck hair but any other known errors would be much appreciated!:yes:

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  3. Jim M

    Jim M Ride it like ya stole it

    There are alot of them.. Go to Coneca's Master listings and nose around a bit. ( especially look into the Kennedy Half Section )
  4. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    One of my favorite proof errors (well, it was an error until recently) is the 2005-S KS Silver SQ with the die gouge on the bison. There have only been 12 of these reported, but because the processing of proof coins is supposedly more stringent, I don't know if any more will ever surface. The gouge is very visible to the naked eye.

    Anyway, I submitted mine to NGC a few years ago, and it was classified as a Mint Error. Since then, however, it was added to the CPG, 5th Edition, Volume II which was released a few months ago. Because it is listed in the CPG as FS-901, I will probably resubmit it to NGC for the designation. I could just leave it as it is, but the NGC Census doesn't separate errors from the normal populations. It isn't every day that you find a "perfect" error, and it would be cool to see it listed as the Top Pop at PF70UCAM with no others.


    Attached Files:

  5. TheCoinGeezer

    TheCoinGeezer Senex Bombulum

    The "accented hair" 64 Kennedy proof isn't really an error:
    At any rate, there are plenty of errors on proof coins - the missing "S" mint mark on Roosevelt dimes immediately comes to mind (lordy how I wish I had them in my Roosie collection!)
  6. 19Lyds

    19Lyds Member of the United States of Confusion

  7. 19Lyds

    19Lyds Member of the United States of Confusion

    Again, not mine:


    Both, I suspect, were manufactured intentionally and smuggled out but thats simply my opinion.

  8. Kirkuleez

    Kirkuleez 80 proof

    That is one of the most interesting errors that I have ever seen. The color on the smaller one is just beautiful.
  9. Conder101

    Conder101 Numismatist

    There are a fair number of doubled dies on proof Ikes, there is a strong doubled die 1970-S cent. There are rotated dies etc.
  10. 19Lyds

    19Lyds Member of the United States of Confusion

    While this is true, I don;t believe that the industry considers a doubled die to be an error as much as it considers it a variety.

    IMO, a "variety" has the error during the die creation process while a minting "error" occurs during the creation of the coin and as such, could very well be one of a kind.

    Clips and broadstrikes are possible until you get to the packaging process. Automated or not, if the coin will not fit into the intended packaging due to a broadstrike or major off center strike, you really have to wonder how the coin made it out of the US Mint or packaging facility.
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