Coin Conservation Demonstration

Discussion in 'US Coins Forum' started by LostDutchman, Apr 4, 2014.

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  1. Kentucky

    Kentucky Supporter! Supporter

    A question for Thad. Could these be better treated with VerdiCare?
     
    Kentucky, Apr 4, 2014
    #21 + Quote Reply
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  3. Ethan

    Ethan Collector of Kennedy's

    Interesting, I am interested in the outcome.
     
    Ethan, Apr 4, 2014
    #22 + Quote Reply
  4. LostDutchman

    LostDutchman Under Staffed & Overly Motivated Supporter

    I don't want to speak for Thad and I'm sure he will correct me if I am wrong but I don't think VerdiCare would do much for these coins. But please correct me if I am wrong.
     
    LostDutchman, Apr 4, 2014
    #23 + Quote Reply
  5. coppertoning

    coppertoning Well-Known Member

    Off topic, but I am curious. What grades would you need or expect to make submissions worth it for 1910 wheats?

    I am assuming a bulk submission must be much less expensive than regular
     
    coppertoning, Apr 5, 2014
    #24 + Quote Reply
  6. LostDutchman

    LostDutchman Under Staffed & Overly Motivated Supporter

    I expect them to go in the low end mint state range. The bulk submission is much cheaper than the regular submission.... But you must have 100+ items.
     
    LostDutchman, Apr 5, 2014
    #25 + Quote Reply
  7. GDJMSP

    GDJMSP Numismatist Moderator

    A final thought Matt. You mentioned that you use acetone to remove the oils after treatment. But to my eye the coins in the pics still have what I call the "oily look", they are glossy. I suspect that is because acetone doesn't remove oil very well. I think you would have better luck removing the oil with xylene.

    The oily look can be a good thing or a bad thing. It simulates the look of that glossy, chocolate brown that copper can get with natural toning. And sometimes the TPGs will accept this and grade the coin. Other times they will not and designate the coin as having altered surfaces.

    So just for giggles Matt, take one of those coins, take a pic as it is, rinse it in xylene, and then take an after pic. I'm betting there will be a noticeable difference.
     
    GDJMSP, Apr 5, 2014
    #26 + Quote Reply
  8. BadThad

    BadThad Calibrated for Lincolns

    Nice job! Well worth the effort! Looks like mostly MS 1910's....saved for future generations.
     
    BadThad, Apr 6, 2014
    #27 + Quote Reply
  9. imrich

    imrich Supporter! Supporter

    Thanks for the thread Matt!! Nice Job!! Have you tried this or other processes on contaminated 90% Silver coins with any positive results? I've some beautiful Silver coins that are blackened from "improper" storage for many decades, and any process couldn't hardly reduce their value, but would appreciate knowing of your experiences. Rich
     
    imrich, Apr 6, 2014
    #28 + Quote Reply
  10. mark_h

    mark_h Somewhere over the rainbow

    With Doug on this one - some of them still look oily and you see some large cents in problem free holders with that look. I must admit they cleaned up nicely. Good luck and let us know how it turns out.
     
    mark_h, Apr 6, 2014
    #29 + Quote Reply
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