Strange color 2012 D Penny

Discussion in 'What's it Worth' started by Mike Drop, Dec 7, 2017.

  1. Mike Drop

    Mike Drop Active Member

    The coin on the left has a bright bronze color and Idk what I have here. Thanks for the help 1512697456606608515854.jpg 15126975805241384085072.jpg 1512697456606608515854.jpg 15126975805241384085072.jpg 15126976286691996570904.jpg 1512697456606608515854.jpg
     
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  3. Oldhoopster

    Oldhoopster Member of the ANA since 1982

    Doesn't look unusual. Copper is a very reactive metal
     
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  4. paddyman98

    paddyman98 I'm a professional expert in specializing! Supporter

    The 2012 is 4 years older than the 2016... natural toning

    What's it worth?... 1 Cent + 1 Cent = 2 Cents
     
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  5. Mike Drop

    Mike Drop Active Member

    Thank you very much but I have to politely disagree due to the fact that pictures do not do many coins justice and the strange colors much more evident in person. Obviously you would counter by stating that I am not taking advice and being irrational but I would promise you that there is something significant about this penny and I will sometime in the near future have this analyzed by a few different coin dealers and coin professionals. In the end you may be right that it is just common toning but I consider this important enough for me to have checked out by professionals in real life. Thank you for your time and I hope you have a great day.
     
  6. V. Kurt Bellman

    V. Kurt Bellman Yes, I'm blunt! Get over your "feeeeelings".

  7. spirityoda

    spirityoda Coin Junky

    it's called toning.
     
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  8. paddyman98

    paddyman98 I'm a professional expert in specializing! Supporter

    it's a copper plated zinc Cent... That changes colors over the years. They don't use anything else besides copper.
    Well.. do what you want and you're welcome.

    ✌ peace
     
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  9. 352sdeer

    352sdeer Collecting Lincoln cents for 50 years!

    AND:banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::dead:
     
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  10. ldhair

    ldhair Clean Supporter

    You can find copper in a hundred different colors. That's just the nature of the metal.
     
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  11. Oldhoopster

    Oldhoopster Member of the ANA since 1982

    I would strongly suggest that you make sure "the coin professional" fully understands how to do a compositional analysis. There is a lot more to using a handheld XRF than reading numbers off a screen. Just because a guy has an analyzer doesn't mean he's an expert. Turns out that copper plating is pretty thin and the analytical method penetrates slightly below the surface. So, when your "professional" reads off the numbers, is he measuring the surface toning? Copper plating? Zinc core? Ask him.

    I would also strongly suggest that you look into the production process of copper plated zinc planchets to get an idea of the how errors could occur and the likelihood of an occurrence. I would also take the time to research "Brass plated" cents from the 1980's. I am among those who believe there were brass plated error cents made. It was a new process at the time and if you understand some basics on how an electroplating production process works, it's easy to see it happening. However, if you've every worked on a manufacturing process, especially when it's new, you'll know that the engineers are ALWAYS working on better/faster/cheaper. The production problems that caused the brass plating have been fixed. Also, check out some electrochemistry to see what materials may form ions in the plating solution and be co-deposited with the copper during the plating process. That should narrow done your suspects as well.

    Finally, as you research the "Brass cents", take special note of the analytical work done. It wasn't done by some guy who doesn't know the difference between XRF, XRD and EDS, but by research people. You'll find that short of destructive testing, there really isn't a good way (without spending BIG bucks) to determine the composition with confidence.

    So, with copper being a very reactive metal, which has a tendency to react with oxygen and numerous other organic and inorganic contaminants found in everyday life (I think I forgot to include heat, which also speeds up these reactions). I feel pretty confident that the colors on your cent are due to normal toning, even if they are much more vivid.

    Just some things to think about. Hope it helps. Let us know the compositional data when you get it analyzed
     
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  12. 352sdeer

    352sdeer Collecting Lincoln cents for 50 years!

    @Oldhoopster Well done. EXCELLENT information presented in a professional manner.
    Thank you for posting this.
     
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  13. V. Kurt Bellman

    V. Kurt Bellman Yes, I'm blunt! Get over your "feeeeelings".

    Well preserved cents in a moderately protective environment can attain nearly any color near one another in the color pallet. I have some nice'ns that resemble fine bourbon.
     
  14. Mike Drop

    Mike Drop Active Member

    I would find that reasonable

    I will do what I can and thank you for the description
     
  15. Bambam8778

    Bambam8778 Well-Known Member

    I look through cents all the time, Mike, and I can see that type of color difference in even the same year.
     
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