CLEANING COINS! PLEASE HELP!

Discussion in 'Coin Chat' started by Treashunt, Oct 17, 2013.

  1. desertgem

    desertgem Senior Errer Collecktor Supporter

    I sure would like to see your book finished Thad. :)

    Jim
     
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  3. BadThad

    BadThad Calibrated for Lincolns

    It would certainly save me a lot of typing! LOLOL

    I did most of the work on the book while I was laid-off. Just too much going on in my life to work on it. When I do have free time, I like to watch TV or play video games. It will happen eventually though.
     
  4. AWORDCREATED

    AWORDCREATED Hardly Noticeable

    All those pages ^ of much ado about nothing. Just swallow it today and rinse it tomorrow :)
     
  5. GDJMSP

    GDJMSP Numismatist Moderator

    Been a long time since I've seen that avatar Jim ! :)
     
  6. green18

    green18 Unknown member Sweet on Commemorative Coins

    I like it.......:)
     
  7. torontokuba

    torontokuba Thread Crapper & Hijacker, TP please.

  8. AWORDCREATED

    AWORDCREATED Hardly Noticeable

  9. GDJMSP

    GDJMSP Numismatist Moderator

    There's a bit of a story behind that avatar of Jim's. You newer members wouldn't be aware of it because you weren't here back then.
     
  10. desertgem

    desertgem Senior Errer Collecktor Supporter

    It is the yearly HALLOWEEN avatar season !!!! :) Everybody is disguised as Doug !
     
  11. Kentucky

    Kentucky Supporter! Supporter

    I am a chemist also, but an organic chemist with an interest in inorganic chemistry and coins. I found some disagreement with the presentation and am not sure if I am just being picky or suspicious because of other inaccuracies. On slide 4 we are told that some bronze disease is caused by the production of acid internally!!? What does that mean? Slide 9 assures us a patina is oxidation, but he doesn't mention that many acids are "oxidizing" acids, so can acids cause patina to form. He also mentions a 5% molal solution, which is like saying 5 cents dollars. Finally he tells us on slide 19 that ethanol is a dangerous chemical and difficult to purchase...maybe if you are under 21, those over 21 can purchase 40 or 50% solutions as Vodka (whatever brand you like) or as 95% Everclear Pure Grain Alcohol.

    Patina, corrosion, verdigris are mostly the same animal since it is not a well defined animal, and a lot depends on surface factors, crystal growth and density of deposition, which is way beyond my scope, but at least I know it is. All this being said, I appreciate a good patina but decry verdigris.
     
  12. GDJMSP

    GDJMSP Numismatist Moderator

    I dunno, I think a lot of the confusion comes from patina commonly being used to describe the green deposits often seen on ancients. While at the same time patina is also sometimes used to describe just about any coloration on coins, what is normally called toning by most.

    I'm not saying that either use of the word patina is incorrect, on the contrary, if you look at the definition of patina - http://dictionary.reference.com/browse/patina?s=t - you'll see that both usages are correct.

    But toning and that green patina seen on ancients are entirely different things and each is caused by entirely different things. But at the same time they are similar in that they are both oxidation. For that matter even rust on steel can correctly be called a patina.

    I suppose a lot of the confusion has to do with books and things that are written. A lot of folks, not just Chris, think that the green patina, verdigris, and bronze disease are all 3 different things. They kind of are, but in reality they are not. They are just different forms of the same thing.
     
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  13. Kentucky

    Kentucky Supporter! Supporter

    OK, now I totally understand it : - )
     
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  14. BoneDust

    BoneDust Active Member

    I have realized by reading this whole discussion that coin collecting is no longer a hobby but a job.
     
  15. AWORDCREATED

    AWORDCREATED Hardly Noticeable

    I never thought of it that way, but if you eat a lot of olive oil it makes the cleaning process less stressful :)
     
    Kentucky likes this.
  16. definer

    definer definitely....! LOL

    I think that would have been a better statement in this thread:

    http://www.cointalk.com/posts/1806571/

    :)
     
  17. GDJMSP

    GDJMSP Numismatist Moderator

    Well I guess that kind of depends on your perspective. The collecting is easy, you walk into a shop, go to a coin show, or visit a web site, and you say OK, I'll take this one, and that one over there. All because you're trying to fill holes in a set you are putting together or just because you happen to think they are cool and you like them. And nothing more needs to be done - easy, not a job at all.

    But the learning part, that is hard work. That is a job. You have to buy some books, search the internet, do some reading, studying, and research. Expend some effort and time, years and maybe decades, and often no small amount of money.
     
  18. BoneDust

    BoneDust Active Member

    Now buying antique digital wristwatches. Hopefully copper ones with a lot of vertigris and green patina so I can tell where the watch goes on my wrist.
     
  19. AWORDCREATED

    AWORDCREATED Hardly Noticeable

    Gonna be difficult to swallow a wrist watch, regardless how much olive oil you chase it with, and even worse tomorrow ... :D
     
    definer likes this.
  20. BoneDust

    BoneDust Active Member

  21. Kentucky

    Kentucky Supporter! Supporter

    As an old geek in the circus once told me "If you swaller a snake, chase it down with some olive oil. They go down easy but come out rough."
     
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