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PMD or DDO?

sumduncesumdunce Posts: 1,247 ✭✭✭✭
in Q & A Forum

Found this while testing my new digital microscope:




Looks PMD to me.

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    JBKJBK Posts: 14,788 ✭✭✭✭✭

    MD?

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    OldhoopsterOldhoopster Posts: 2,930 ✭✭✭✭✭

    Flat and shelf alike appearance. No split serifs. Characteristics of Mechanical doubling

    There are numerous coins that display MD or Die Deterioration Doubling, but very few with true hub doubling. Understanding the characteristics of each will save you you a lot of time if you continue to search for doubled dies. The following links have some good info. I recommend taking some time to study it.

    https://www.doubleddie.com/58222.html
    https://www.doubleddie.com/144801.html

    Member of the ANA since 1982
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    MarkKelleyMarkKelley Posts: 1,765 ✭✭✭✭✭

    Also called strike doubling. It is caused by loose parts in the press.

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    mannie graymannie gray Posts: 7,259 ✭✭✭✭✭

    Machine doubling.

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    Steven59Steven59 Posts: 8,294 ✭✭✭✭✭

    More precisely "Slide doubling" - like stated previously, loose machine parts pushed the die as it was striking the planchet.

    "When they can't find anything wrong with you, they create it!"

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    WAYNEASWAYNEAS Posts: 6,355 ✭✭✭✭✭

    Machine Doubling.
    Not a DDO
    Wayne

    Kennedys are my quest...

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    JWPJWP Posts: 17,743 ✭✭✭✭✭

    Love the comments - thanks for sharing your knowledge. :)

    USN & USAF retired 1971-1993
    Successful Transactions with more than 100 Members

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