Featured A lesson on copper-color annealing with 2 cool examples

Discussion in 'Error Coins' started by JCro57, Jul 30, 2018.

  1. JCro57

    JCro57 Making Errors Great Again

    This coin became rosey pink as a result of being overcooked in the annealing oven. Though many simply become a darker grey, some tend to be copper colored. Some become copper colored in spots, some can also become so even on one side, such as this one I won on GC last night. (MS65 by NGC)

    Screenshot_2018-07-30-19-20-51~2.png Screenshot_2018-07-30-19-21-03~2.png

    Nickels are 75% copper, and it is believed that the copper particles can be drawn outward toward the surface. It sometimes even leaves a copper crust or shell, which can flake off or separate in large sections. Some of you may remember this one I posted awhile ago with just the outer shell and no planchet. (MS62 by PCGS)

    0626181822b_HDR.jpg 0626181823_HDR.jpg
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  3. gronnh20

    gronnh20 Well-Known Member

    You need a black beauty example too. Cool exoskeleton and coin.
  4. JCro57

    JCro57 Making Errors Great Again

    Got one!

  5. paddyman98

    paddyman98 No Common Cents! Supporter

    Improper Alloy Mix?

    Isn't it Improperly Annealed? I think ANACS incorrectly named it
    Last edited: Jul 30, 2018
  6. paddyman98

    paddyman98 No Common Cents! Supporter

    Here's my 2004 P Keelboat Improperly Annealed with the rosey color on both sides -
  7. JCro57

    JCro57 Making Errors Great Again

    Yes. Improper alloy means the percentages of the metals are off. Pretty sure this was discussed on a previous post.
  8. CoinBlazer

    CoinBlazer ad astera per aspera

    oh no!!!! I've seen a coin in my pocket change like that and i thought it was PMD
  9. BoonTheGoon

    BoonTheGoon Well-Known Member

    I think I have seen somthing like that as well, dang!
  10. Seattlite86

    Seattlite86 Outspoken Member

    I'm kicking myself for the off-color jefferson nickel I kicked back... now I'm wondering.
  11. SlipperySocks

    SlipperySocks Well-Known Member

    Cool! Looks like a little MD on his nose and upper lip also.
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