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CONECA (pronounced: CŌ´NECA) is a national numismatic organization devoted to the education of error and variety coin collectors. CONECA focuses on many error and variety specialties, including doubled dies, Repunched mintmarks, multiple errors, clips, double strikes, off-metals and off-centers—just to name a few. In addition to its website, CONECA publishes an educational journal, The Errorscope, which is printed and mailed to members bimonthly. CONECA offers a lending library, examination, listing and attribution services; it holds annual meetings at major conventions (referred to as Errorama) around the country.

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  • lamination?

    Any idea about what kinf of error is this?
    There is a low area normally struck...lamination?
    Attached Files

  • #2
    You've got a stepped (bi-level) die crack that extends between two points on the rim. The portion of the die demarcated by the crack protruded slightly beyond the plane of the die face. Alternatively, the portion of the die face that lay outside the crack retreated slightly. You don't see this pattern of brittle failure very often, except on Indian coins.
    Mike Diamond. Error coin writer and researcher.


    • #3
      Thank you!
      Is it a sort of "opposite retained cud" of the hammer die (the crack is on the observe side)?
      If I have correctly understood, the fragment of the cracked die went up (compared to the surface of the die) instead of going down (as usual in a retained cud). In case of hammer die, due to force of gravity, I deem it should be usual that the fragment goes up (compared to the surface of the die). Isn't it?


      • #4
        Yes, its appearance is the opposite of a retained cud. Here we have a step-down on the surface of the coin, rather than the step-up commonly associated with a retained marginal die break (retained cud). It's important to understand that retained cuds of the hammer die don't really exist:


        What we have is brittle failure occuring within a still-intact die, brittle failure that results in a sinking-in on on side of a die crack.
        Mike Diamond. Error coin writer and researcher.