Should cameo disruptions on a proof prevent a PF-69 grade?

Discussion in 'US Coins Forum' started by frostyluster, Dec 28, 2012.

  1. frostyluster

    frostyluster Member

    Hey ya all! Feelin' a little down today, so figured that I should have one of my questions answered. Ya all know those tiny, tiny, nicks you can't see a distinct shape to but cause shiny spots in the cameo contrast/ Should they prevent a 69 grade?
    How about a joke?
    a kid moves to Washington DC and starts going to school. A friendly kid asks him his name, and he responds, Imasonofa *ahem* The friendly student, not very smart, says, "Hi, I'masonofa *ahem*!" Unfortunately, the kind heated child is laughed at. Poor guy. It just goes to show, wisdom is very important.
     
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  3. Tom B

    Tom B TomB Everywhere Else

    Cameo designation and grade are not related.
     
  4. John Anthony

    John Anthony Ultracrepidarian

    Which I find odd. Isn't the amount of cameo directly related to the strike, and isn't the strike part of the grade?
     
  5. Hunt1

    Hunt1 Active Member

    Cameo is from overly polished dies/planchets....right?
     
  6. frostyluster

    frostyluster Member

    HRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRGGGGGGGHHHHHHHH!!!!!!!! Do I always have explain my threads??!?! Well, in any case, I was refering to modern proofs.
     
  7. John Anthony

    John Anthony Ultracrepidarian

    He answered your question quite directly.
     
  8. CBJesse

    CBJesse Capped Bust Fanactic

    There are many PF69 coins with no cameo at all.
     
  9. Tom B

    Tom B TomB Everywhere Else

    Cameo contrast is not related to strength of strike. Modern proof coinage is typically cameo because the dies are acid etched or laser etched to produce the cameo affect on the struck planchet. Proof coinage from 1970 or thereabouts, and prior, is cameo if relatively fresh dies were used that had been treated during cleaning and preparation. As the dies were continually used, the delicate cameo devices would slowly erode to produce a more brilliant and mirrored finish.
     
  10. John Anthony

    John Anthony Ultracrepidarian

    Thanks for clarifying that, Tom. I suppose that's why you find so many DCAMS in the 90's onward...
     
  11. GDJMSP

    GDJMSP Numismatist Moderator

    No, not right.

    As Tom already explained, the recessed portions of the die used to be etched with acid. Today they are etched with a laser. But that is only part of what creates the cameo effect. The other part of it is that the fields of the die are intentionally polished until they shine like a mirror. Then the fields of the die are chrome plated. And the planchets are also polished.

    Those 2 things together are what create the cameo effect.
     
  12. Kirkuleez

    Kirkuleez 80 proof

    Disruptions in the cameo can change the grade, it is usually a tiny area of frost missing from the cameo that prevents a coin from getting the PR-70 grade. Of course this really only applies to PR-69 and PR-70 coins.
     
  13. frostyluster

    frostyluster Member

    I said disruptions, not desisignations. I mean disruptions caused by tiny nicks.
     
  14. Hunt1

    Hunt1 Active Member

    Thanks for clearing that up Doug.
     
  15. John Anthony

    John Anthony Ultracrepidarian

    This is a fun video to watch. You can skip the first minute - it's just fluff. But the rest is quite interesting as a general overview of modern proof minting...

    [video=youtube;Y0gR9Fn5qsQ]http://www.youtube.com/watch?v=Y0gR9Fn5qsQ[/video]
     
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