Just Bought this AT POS Peace Dollar ;)

Discussion in 'US Coins Forum' started by physics-fan3.14, Jan 2, 2010.

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  1. diocletian

    diocletian Senior Member

    Oops. That should be NT vs Bad AT or detectable AT
     
    diocletian, Jan 5, 2010
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  3. CamaroDMD

    CamaroDMD [Insert Clever Title]

    It has to do with the surface of the coins. On a microscopic level, the surface of the coins aren't smooth but are comprised of jagged ridges basically. When a coin tones, a silver oxide layer builds up on the coin...light then refracts through this layer and off surface ridges creating the colors. The surface ridges of a Morgan Dollar are larger that those of a Peace Dollar (basically, a Peace Dollar is much smoother on a microscopic level). This changes the visual properties of the toning. It's the same reason why a Morgan Dollar and a Peace Dollar have a different luster pattern.
     
    CamaroDMD, Jan 5, 2010
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  4. GDJMSP

    GDJMSP Numismatist Moderator

    What he said :thumb:
     
    GDJMSP, Jan 5, 2010
    #43 + Quote Reply
  5. pondman

    pondman Junior Member

    Perhaps ms-62 AT. Sorry doesn't look natural-- looks floaty.
     
    pondman, Jan 5, 2010
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