2018-s reverse proof block quarter mechanical/shelf doubling?

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fnetty
fnetty Posts: 50 ✭✭✭
in U.S. Coin Forum

Is this mechanical or shelf doubling and is it common on proof coins?

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  • ricko
    ricko Posts: 98,724 ✭✭✭✭✭
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    Yes, it is machine/mechanical doubling... No idea if it is common on proof coins... have not been buying the sets for at least a decade.....Cheers, RickO

  • fnetty
    fnetty Posts: 50 ✭✭✭
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    Thanks for the input

  • Smudge
    Smudge Posts: 10,001 ✭✭✭✭✭
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    I have 1 set and it does not have any doubling. Not much of a sample, but all I have.

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