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  • In Q & A format: Editor's Q&A: Error coin specialist Mike Diamond Editor's Q&A: Error coin specialist Mike Diamond Illinois numismatist Mike Diamond has a firm grounding in the scientific method, having taught college-level evolutionary biology and anthropology. View on www.coinworld.com Preview by Yahoo
    mdia1@... Aug 22
  • This stainless steel India 25 paise has a 60% indent associated with a very nice extrusion strike. Coin metal that was horizontally compressed between the intrusive planchet and the collar buckled upward toward the hammer (reverse) die and pushed into it. Essentially, the coin struck the die, instead of the die striking the coin. Most such errors feature a partial collar (it helps...
    mdia1@... Aug 16
  • The coin also shows a slightly convex "foreign object chain strike" on the outer edge of the off-center strikes. It's presumably from the cradle of a feeder. Such chain strikes are very common among super-multistrikes, and the machine part undoubtedly has a role in the production of such errors. I don't see any indentation from an ejector pin at the opposite pole. The two often go...
    mdia1@... Aug 16
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  • This coin sold for a surprisingly low price: 1993-P 50C PCGS MS65, Struck Multiple Times 1993-P 50C PCGS MS65, Struck Multiple Times US $913.00 in Coins & Paper Money, Coins: US, Errors View on www.ebay.com Preview by Yahoo I would have thought it would bring twice this amount. It's the first half dollar super-multistrike I've seen.
    mdia1@... Aug 16
  • If your steelie was from Philadelphia, then it might not have been a transitional planchet error after all. Remember that planchets identical to those used for 1943 steel cents were also used in 1944 to strike Belgium 2 franc coins. My only transitional planchet error is from Russia. In a message dated 8/15/2015 4:46:07 P.M. Central Daylight Time, errorcoininformationexchange@^$1...
    mdia1@... Aug 15
  • I wasn't aware you were in attendance. I would very much have liked to have met you. I often stay in the northern suburbs, so perhaps we can rendezvous on one of my future visits to the area. Did you acquire anything of interest? Any sightings of fantastical errors I managed to miss? In a message dated 8/15/2015 4:10:13 P.M. Central Daylight Time, errorcoininformationexchange@^$1...
    mdia1@... Aug 15
  • I spent Friday at the show. Error dealers were well-represented, with Fred Weinberg, Jon Sullivan, Rich Schemmer, James Essence, and Mike Maino on hand. Brian Raines also had a table. Brian told me he discovered several examples of a new mule clash on a nickel 3-cent piece (1867, I think). He also described two unlisted floating die clashes. But he sold them all off before anyone...
    mdia1@... Aug 15
  • Part of my recently inaugurated and ongoing "basics" series: When one becomes two (by splitting): Collectors' Clearinghouse When one becomes two (by splitting): Collectors' Cle... A blank or struck coin can split along a horizontal plane, from a poorly mixed or impure alloy. Clues tell whether the pieces split before or after the strike. View on www.coinworld.com Preview by Yahoo
    mdia1@... Aug 15
  • As far as I'm concerned, the "wounded eagle" is a triumph of marketing over significance. Die gouges and linear die dents as dramatic as these occur in other denominations and carry very little premium. In a message dated 8/14/2015 10:12:24 P.M. Central Daylight Time, errorcoininformationexchange@^$1 writes: Thanks for your response. Hear that. But when the Wounded Eagle was...
    mdia1@... Aug 15
  • It looks to be stained. It's not defective cladding. In a message dated 8/14/2015 9:49:12 P.M. Central Daylight Time, errorcoininformationexchange@^$1 writes: Years ago a friend gave me a weird looking 1989-D dime, he gotten back in change, since he knew I collected coins. Recently sent it in to ANACS with two other error coins (rotated die quarter and a war nickel lamination...
    mdia1@... Aug 14