toning in mint wrapped rolls

Discussion in 'Coin Chat' started by silentnviolent, Jul 26, 2015.

  1. silentnviolent

    silentnviolent accumulator--selling--make an offer I can't refuse

    I had bought two of the LP1 P&D roll sets when released. I opened one set to look at them, kept the other sealed.

    Today I had the urge to look at the ends of the opened set again and the ends are toning. Do you think they toned in the sealed set?

    Anyone else out there see toning on the ends of mint wrapped rolls? WP_20150726_15_16_36_Pro.jpg WP_20150726_15_17_34_Pro.jpg
     
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  3. green18

    green18 Unknown member Sweet on Commemorative Coins Supporter

    I suspect the others have not toned as the only coins exposed to the environment were the end cappers.

    And this sort of thing has happened with some of my Sacajawea's and presidential's.
     
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  4. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    I'm guessing that Ken is correct, but I'm not 100% positive. I have about 100 rolls of the Westward Journey nickels in Mint wrappers. I've kept each roll stored in a square coin tube to keep the paper wrapper in pristine condition. Some of the wrappers are partly green, some are partly blue and some are partly brown. I noticed that the end coins in the green wrappers have toned, but this is not the case with the others. I can only conclude that the pigment has some effect on the metal composition. Perhaps that is the case with your cents.

    Chris
     
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  5. phankins11

    phankins11 Well-Known Member

    Mine seems to be starting to tone, but in looking at them I found this...

    usbcamera20150726201126.jpg

    Rolling machine damage. :confused:
     
  6. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    Are you sure that is toning? It looks to me like it might be latex paint..........AT!

    Chris;););)
     
  7. green18

    green18 Unknown member Sweet on Commemorative Coins Supporter

    Roll baby roll.....

     
  8. phankins11

    phankins11 Well-Known Member

    icon_smile_roflmao.gif

    I know, I used my dino-lite, so the lighting makes it look horrible.
     
  9. doug5353

    doug5353 Well-Known Member

    You are OK as long as you remember that "beautiful toning" is essentially a sulfite or sulfate reaction that somewhere way down the line, destroys the surfaces of silver coins; copper toning can involve a multitude of contaminants and reactants.

    To each his own.
     
  10. green18

    green18 Unknown member Sweet on Commemorative Coins Supporter

    That's right......one hundred years from now my great grand kids are gonna hate me......
     
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  11. silentnviolent

    silentnviolent accumulator--selling--make an offer I can't refuse

    I'm wondering about the inks in the mint wrappers combined with the plastic tray (PVC?) as well as whatever adhesive holds together the barcoded white boxes the sets are in.
     
  12. silentnviolent

    silentnviolent accumulator--selling--make an offer I can't refuse

    ^ Not a mint wrapped roll.
     
  13. green18

    green18 Unknown member Sweet on Commemorative Coins Supporter

    My saky's look good. Ain't changing nothing.....
     
  14. phankins11

    phankins11 Well-Known Member

    you know when I bought these I was much more naive. But I think you're right. Didn't even think about it. I have 2010's in the rolls that say United States Mint, but these are not.

    20150726_205408.jpg
     
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  15. krispy

    krispy krispy

    When colorful toners have outlived their usefulness selling for big bucks in all colors of the rainbow, turned black and eventually deemed negative in appearance, any once (subjective) "beautifully" toned coin will be dipped, brightened up and returned to the market in a refreshed state, ready to repeat the process of acquiring toning and trading hands all over again.
     
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  16. silentnviolent

    silentnviolent accumulator--selling--make an offer I can't refuse

    Yes.
     
  17. silentnviolent

    silentnviolent accumulator--selling--make an offer I can't refuse

    I'm more concerned with what is causing the tone. Could the plastic tray contain pvc that is damaging all the enders in every set?
     
  18. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    I doubt that the Mint would be stupid enough to use a plastic that contained PVC.

    FWIW, I stored Mint-wrapped SQ rolls in those plastic trays for years, and they never affected the end coins.

    Chris
     
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  19. silentnviolent

    silentnviolent accumulator--selling--make an offer I can't refuse

  20. desertgem

    desertgem Senior Errer Collecktor Supporter

    I think you were correct in blaming the paper. The mint does not mention anything I have seen about using acid free archival paper. The green lid on ASE tubes will cause/allow strong toning to the top one or two, even when stored in good conditions, but it is just bullion , so no matter.
     
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  21. krispy

    krispy krispy

    I, on the other hand, do not trust all plastic materials the US Mint uses. I wouldn't trust the kind of plastic (as in the tray in the OP) let alone many of the US Mint's packaging materials for protecting coins. Metals are simply reactive by nature, perhaps more so to our eyes and sensitivities in their purer states that we force them into by refining and isolating them as such, but also in the presence of other chemicals prone to changing or decaying and gassing off. The only US Mint plastic I put any trust in is their version of the acrylic capsule, lens or holder. For example, any of the collectible silver Eagles I get from the Mint in velvet cases, I remove and store the capsules containing the coins in Ziplock bags and keep them out of the light and out of an environment that changes temperature and humidity drastically. Some of the velvet lined trays Mint products come in are the same plastic as the tray in the OP, with some powered material adhered to them. In this case you are dealing with pigments, plastics, and adhesives, all which can gas off and can react with coin surfaces. Paper material has all manner things in the pulp, from pigments to chemicals such as sulfurs thought to induce toning.
     
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