Question on mechanical doubling error.

Discussion in 'Error Coins' started by sunday13, Feb 23, 2019.

  1. sunday13

    sunday13 Active Member

    How can it be a mechanical doubling, nice and flat like all the common mechanical doublings, but still have a raised area around the letters? What I am missing here? There must be something I don't get right. Thank you guys

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  3. furryfrog02

    furryfrog02 Well-Known Member

    That's not raised. That is flat and shelf-like.
  4. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    Sunday, I've never liked this diagram representing mechanical doubling (aka machine doubling) because it suggests that the juncture of the "false doubling" and the letter, number or device is rounded, but actually, it is not.

    What happens is that the die is loose and vibrates strongly back and forth, and as it retracts from the strike, it shaves a small amount of coin metal from the face of the letter, number or device.

  5. sunday13

    sunday13 Active Member

    I can see the mechanical. i wrote that down on my title and description. My question is about the, let's say abrasion like? deteriorate like? , die above the letters. Sometimes I look too hard with no reason. Maybe this is one of those cases
  6. furryfrog02

    furryfrog02 Well-Known Member

    Fair enough. It is a good visual representation of doubling though IMO. Your missing clad half is still only worth 50 cents :p
  7. furryfrog02

    furryfrog02 Well-Known Member

    Never without reason if you are learning something. Chris' explanation of how the metal is sheared off is a good way to look at it.
  8. sunday13

    sunday13 Active Member

    Thank you soooo much guys!! I'm doing my best here!!
  9. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    If I had some "New York Raspberries" I'd give them to you.:woot::woot:

  10. Kentucky

    Kentucky Supporter! Supporter

    The analogy I came up with was cutting a cookie with a cookie cutter and just as you start to raise it from the dough, you move it a bit, leaving the "lower shelf".
  11. sunday13

    sunday13 Active Member

    And I thought I WAS the one watching too many movies!!!! LOL
    Kentucky likes this.
  12. SlipperySocks

    SlipperySocks Well-Known Member

    A couple of tips that helped me were to focus on the corners of the letters. there needs to be notching. Also, true doubling will make the letters bigger whereas mechanical doubling will make the letters smaller if you can imagine that.
    sunday13 likes this.
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