1986D Machine Doubling or Die Doubling?

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  • WxMan
    Member
    • Apr 2014
    • 654

    #1

    1986D Machine Doubling or Die Doubling?

    I need an expertise opinion on this coin.


    MyPCGSSets
  • Roller
    Member
    • Feb 2010
    • 6975

    #2
    Sorry. That is not a DDO. It is a plating related anomaly.

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    • willbrooks
      Die & Design Expert, LCF Glossary Author

      • Jan 2012
      • 9477

      #3
      It is neither machine doubling nor a doubled die. What you have there is called die deterioration doubling. Very common.

      Die Deterioration Doubling
      : A phenomenon that occurs from Die Deterioration whereby the devices show a duplicate image on a coin. As metal must flow into the recessed areas of the die during the strike to form the devices on a coin, the edges and corners of the design elements on the die begin to wear. Eventually, this wear shows as a doubled image on the coins they strike. On Lincoln cents, the date and mint mark are often the first to show this doubling, since these devices are in the middle of a field with no other counter-relief to aid metal flow. Die deterioration doubling usually exhibits on the rim side of the devices. The 1955 “Poor Man's Doubled Die” is NOT a doubled die at all, rather it is an example of Die Deterioration Doubling. Dies in this time period were grossly “overused” resulting in many coins showing this common form of doubling. Die Deterioration Doubling is not generally considered collectible. Please see Jason Cuvelier's excellent tutorial on the subject here: http://lincolncentresource.net/forum...ead.php?t=6169
      Last edited by willbrooks; 05-20-2014, 07:48 PM.
      All opinions expressed are not necessarily shared by willbrooks or his affiliates. Taking them may result in serious side effects. Results may vary. Offer not valid in New Jersey.

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      • WxMan
        Member
        • Apr 2014
        • 654

        #4
        Thanks for the answers. Now it's time to get back to searching.
        MyPCGSSets

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