Mechanical doubling ?

Discussion in 'Coin Chat' started by Kevin wu, May 6, 2017.

  1. Kevin wu

    Kevin wu Well-Known Member

    What you guys think ? A003 - 20170506_224411.jpg A004 - 20170506_224608.jpg A005 - 20170506_225019.jpg
     
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  3. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    Interesting! I've never seen one like this before. Maybe @Fred Weinberg would know.

    Chris
     
  4. eddiespin

    eddiespin Fast Eddie

    Holy cripes, that's a strange one! Very good eyeballs, there, Sherlock. :)
     
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  5. spirityoda

    spirityoda Coin Junky

    very interesting.
     
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  6. Seattlite86

    Seattlite86 Outspoken Member

    Strange. I would fathom it to be twice struck. A very odd one. I look forward to hearing other thoughts. Good eyes.
     
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  7. Rick Stachowski

    Rick Stachowski Motor City Car Capital

    Looks like it could of been double struck in the collar ..

    Recent Finds ...
    Collector Finds Double Struck Dollar Error
    In Gov. Issued Mint Set!
    by Ken Potter - NLG
    All Photos by Jeff Makkos


    [​IMG]

    April 07, 2008 -- Jeff Makkos of Ohio reports finding a Double Struck 2007-P James Madison dollar in a government issued Mint Set. The type of double strike involved is what errorists refer to as an In-Collar Double Strike with Rotation Between Strikes. The cause may be due to two different scenarios. The first possibility is that the coin was first struck normally and then reentered the coining area falling back into or over the collar where it was forced back in by a second strike in a position rotated just a few degrees away from the original strike. Another possibility suggested by CONECA president Mike Diamond, is that coin remained in the collar while the inner sleeve of the collar broke loose and rotated within the collar resulting in the same effect. Because a coin normally expands in diameter ever so slightly upon ejection it is often difficult for it to completely reenter the collar. Makkos' coin does not show a partial collar indicating that it was either forced all the way back in during the second strike or could have been in a rotating collar.

    [​IMG]

    Makkos found it in a 2007 United States Mint Annual Uncirculated Dollar Coin Set that contains the four 2007 Presidential dollars issued by Philadelphia, one 2007 Sacagawea dollar from Denver and a West Point minted 2007 Silver Eagle. All are of the special matte or satin finish that are only issued to collectors in Mint Sets. An image of what the set looks like is at the end of this article. We will elaborate more on this coin as specialists weigh in on its value, etc. KP

    See Additional Images & Story Here

    Note to authors/publishers: CONECA is interested in publishing news releases highlighting current stories published elsewhere that are associated with error-variety coins and/or the minting process. Interested authors/publishers are encouraged to send an abstract along with a photo or more and details of when and where the article was published to the CONECA webmaster at: conecawebsite@koinpro.com (please -- only email submissions).
     
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  8. paddyman98

    paddyman98 I'm a professional expert in specializing! Supporter

    It could be a shift in the tectonic plates :wacky:
     
  9. Oldhoopster

    Oldhoopster Member of the ANA since 1982

    Good thought but I don't think it's double struck in the collar because the underlying rev strike is off center and the obv does not appear to be struck twice.

    I had a couple of ideas like a capped die strike through or an off center strike that was struck correctly a second time, but they don't really make sense. Just throwing them out there to see if they can stir up some thoughts.
     
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  10. Rick Stachowski

    Rick Stachowski Motor City Car Capital

    Hopefully Fred will show up and give his input ...
     
  11. iPen

    iPen Well-Known Member

  12. Kevin wu

    Kevin wu Well-Known Member

    It just plastic on 2x2 , I have to open it to take pictures
     
  13. paddyman98

    paddyman98 I'm a professional expert in specializing! Supporter

    ok.. Is the quarter inside of the 2x2?
    Is the 2x2 wrapped in plastic?
    Did you notice the anomaly before or after it was placed in the 2x2?
     
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  14. Seattlite86

    Seattlite86 Outspoken Member

    I see what you're on to. Good questions.
     
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  15. iPen

    iPen Well-Known Member

    Is it an impression on the plastic that caused that doubling effect?

    If so, I've had that happen to me with a German coin:

    [​IMG]

    [​IMG]

    [​IMG]
     
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  16. Kevin wu

    Kevin wu Well-Known Member

    Yes it in 2x2 holder , and 2x2 is wrapped in plastic . I got this coin few years ago on eBay for few dollars, so I notice the anomaly before placed in 2x2 . And put it in my junk box , almost forgot about the coin until yesterday when I checked my box. coinholders.jpg
     
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  17. paddyman98

    paddyman98 I'm a professional expert in specializing! Supporter

    Would you mind for this thread to just take it out of the 2x2 for a moment and taking pictures of the reverse and obverse side in a raw and open environment?
     
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  18. Kevin wu

    Kevin wu Well-Known Member

    I am at work now ,I will take pictures on open environment tonight paddy .
     
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  19. Kevin wu

    Kevin wu Well-Known Member

    20170507_214424.jpg
    Ok here New pictures , and Plastic warpped on 2x2 . A001 - 20170507_213958.jpg A002 - 20170507_214055.jpg
     
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