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pre-strike damage

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  • Mike Diamond
    Here is a real nice example of pre-strike damage to a copper-plated zinc planchet: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1385016857 It s too bad
    Message 1 of 2 , Oct 6, 2002
      Here is a real nice example of pre-strike damage to a copper-plated
      zinc planchet:

      http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1385016857

      It's too bad that so few people collect this error category. I find
      them very interesting as they're so diverse in cause and appearance.

      Pre-strike damage is completely different from irregular planchets or
      incomplete planchets. In pre-strike damage, the blank emerges normal
      and intact from the blanking press and then is chewed up before or
      after its passage through the upset mill. With irregular planchets
      and incomplete planchets (i.e. "clips") the blank is abnormal from
      the start due to improper blanking or a defect in the coin metal
      strip.
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