How to get rid of/stop oxidation on a coin?

Discussion in 'Coin Chat' started by stainless, Sep 7, 2008.

  1. stainless

    stainless ANTONINIVS

    Anyone know how?


    stainless
     
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  3. spock1k

    spock1k King of Hearts

    to prevent further problems put them in a low humidity environment in intercept shield but exisiting oxidation cannot be removed without treating the coin which is not recommended in most cases
     
  4. stainless

    stainless ANTONINIVS

    k, thanks

    reason why i asked is because I am bidding on a Gorgon for the one hundreth time and this one has oxidiation.

    thanks for the help

    stainless
     
  5. spock1k

    spock1k King of Hearts

    for the ;love of god dont bid on coins that you want to treat later. if you want o get rid of of oxidation biox can be used however coin preservation is best left to curators and as a collector you dont want to get involved if you can help it.
     
  6. rzage

    rzage What Goes Around Comes Around .

    Spocks right , stainless please listen to him and wait till you find a problem free coin , It will come just be patient . If you buy a coin with a problem , you'll always have a coin with a problem , good advice .
    rzage
     
  7. Ardatirion

    Ardatirion Où est mon poisson

    Oxidation on silver usually only occurs in the ground. I doubt that you'll have many problems with it, unless you actually stored it in a bottle of water.
     
  8. stainless

    stainless ANTONINIVS

    uh-oh...hope someone outbids me then..lol

    thanks for the help all :)

    stainless
     
  9. GDJMSP

    GDJMSP Numismatist Moderator

    Are we confusing oxidation with corrosion ? Oxidation encompasses a wide area, it ranges from the lightest of toning to the heaviest corrosion.
     
  10. Ardatirion

    Ardatirion Où est mon poisson

    Pictures would be rather helpful.
     
  11. stainless

    stainless ANTONINIVS

    [​IMG]
     
  12. Ardatirion

    Ardatirion Où est mon poisson

    That looks more like dirt or encrustation on the surface. It could most likely be removed by gentle picking.
     
  13. grizz

    grizz numismatist

    how............................................... ..........

    i think there is a learning process happening here.
     
  14. Drusus

    Drusus Pecunia non olet

    why? Why not learn how to do it yourself? Its a hobby, learn everything you can about it, dont leave it to others...DWI is the best way.

    It does look like it could be dirt, it can probably be removed rather easily.
     
  15. Just Carl

    Just Carl Numismatist

    Absolutely not true. Note the tern Oxidation. This indicates the combining of Oxygen with other elements or compounds. Also, note the air is full of Oxygen. As long as Oxygen can come in contact with many, many substances, it will react and combine to form other substances such as toning, tarnishing, corroding, etc. Also, note that almost all fires are nothing but rapid Oxydation. Usually Carbon based substances, wood, combining with Oxygen.
    In reality storing a coin in water, distilled water of course, will not do anything to the coin. Actually better than leaving it laying out in the open where Oxygen can attack the metal.
    Silver usually combines with Nitrates to form what we see as TARNISHING. Silver also combines freely with Florines, Sulfates, Sulfites, etc.
    The coin in question appears to have corrosion of some type, and the corrosion may be a combination of substances and the actual metal of the coin. Removal would also take some of the coin with it.
    Not a good choice.
     
  16. Ardatirion

    Ardatirion Où est mon poisson

    You're right, my bad. For some reason I had corrosion in mind from the start. That being said, I still think removal would be the best choice.
     
  17. Drusus

    Drusus Pecunia non olet

    I would have to see a color shot of the coin to determine what it is, at first glance it just looks like dirt but that is probably because its in black and white, it could be corrosion. In the end, to say removing it isnt a good choice could only be determined by knowing exactly what it is. Some corrosion can spread and destroy a coin thus arrest and removal would be the only choice, and without doubt the remains could possibly be removed without taking away the metal of the coin. It is coin by coin of course.
     
  18. spock1k

    spock1k King of Hearts

    because its coins 101 you dont buy problem coins. coin collecting and coin curating are not the same thing. its the same reason you wont learn how to fly an airplane but dont mind traveling in it. just my 2 cents
     
  19. rzage

    rzage What Goes Around Comes Around .

    Ditto , also what if it is corrosion that has taken some of the coin with it , better to wait for a problem free coin .
    rzage:D
     
  20. Ardatirion

    Ardatirion Où est mon poisson

    In this case, waiting is a legitimate option. But you must remember that with ancient coins, it could take years for you to find a better one (or even for one to come out of the ground). Even then, it could be vastly beyond your budget.

    There is nothing inherently wrong with buying problem coins. Its selling problem coins that is difficult, because you probably won't get what you paid for it, especially if you overpaid. So long as you recognize the coin as being a problem piece and accept the fact that you may not make your money back, there's no reason not to buy it.
     
  21. spock1k

    spock1k King of Hearts

    my dear ardatrion ancients and modern coinage are as different as chalk and cheese but my advice to every collector out there is dont buy problem coins and going for upgrades is the worst way to collect coins. i am sure there will be many who will disagree with me
     
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