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!

    Screenshot_2018-07-30-19-52-31~2.png
     
  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 -
    IA1.JPG IA2.JPG
     
  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 Well-Known Member

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

    BoonTheGoon Active Member

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

    Seattlite86 Well-Known Member

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

    SlipperySocks Active Member

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