This has to be PMD ? on a 2017 GB £1 coin

Discussion in 'Error Coins' started by justyn p, Oct 24, 2021.

  1. justyn p

    justyn p Active Member

    Has anybody seen anything similar to this confirmed an error or as I suspect is it just PMD ?




    2017 gb £1 error 1.jpg 2017 gb £1 error 2.jpg 2017 gb £1 error.jpg
     
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  3. Oldhoopster

    Oldhoopster Member of the ANA since 1982

    Looks like it was struck through debris (commonly called a grease filled die)
     
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  4. paddyman98

    paddyman98 I'm a professional expert in specializing! Supporter

    Something occured during the minting of that coin.
     
  5. Evan Saltis

    Evan Saltis OWNER - EBS Numis LLC

    Looks like a strike through error to me.
     
  6. potty dollar 1878

    potty dollar 1878 Well-Known Member

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  7. Mountain Man

    Mountain Man Well-Known Member

    It would appear that there is more than just a strike through going on with this coin. It seems the die(s) producing the coin was damaged, or caused damage to the separation of the two parts. I'm not familiar enough with bi-metal coins to know how or what happened, but maybe posting this in World Coins would get you more answers.
     
  8. expat

    expat Remember you are unique, just like everyone else Supporter

    There is corresponding marking, only fainter, on the reverse. Whatever happened to the obverse was with sufficient force to mark the reverse also.
     
  9. Oldhoopster

    Oldhoopster Member of the ANA since 1982

    I believe the striking process provides the force that joins and seals the inner disk and outer ring. The expansion of the metal helps hold the bimetallic coin together. (Please correct me if I'm wrong, I wasn't able to confirm this with a quick search)

    If there is grease on the blank, it could be forced between the inner disk and outer ring and would block metal movement during striking, just as it does on the obverse/reverse surface. I believe this explains the anomalies at the disk/ring interface and small area on the reverse.

    I could be wrong but it sounds like a reasonable explanation, at least IMO. Any other thoughts?

    Edit to add: the angular notches on the reverse bother me a little and I don't think grease explains them
     
    Last edited: Oct 24, 2021
    justyn p likes this.
  10. justyn p

    justyn p Active Member

    My immediate response was no shit Sherlock, no offense intended pls I do see paddyman98's name quoted in copious amounts (Purely for comedy value)
     
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