How do I clean a bronze Masada coin?

Discussion in 'Ancient Coins' started by denmother43, Apr 24, 2019.

  1. denmother43

    denmother43 New Member

    I purchased a Masada bronze coin in Israel for my son. We received a certificate of authenticity so we believe it is an authentic ancient coin. We asked if my son could wear it anywhere (as it was set in a pendant bezel) and the dealer said it is safe to wear in the shower as it has withstood thousands of years. Now, a year later, the coin has gotten blacker and is very hard to see the etchings. What can I do to remove the black so I can see the coin markings again?
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  3. CoinBlazer

    CoinBlazer Professional Teenager

    Pictures if possible would definitively help!
  4. Randy Abercrombie

    Randy Abercrombie Supporter! Supporter

    Hi Denmother...... That is a good question. This is a very active forum and the place you posted this is mostly frequented by folks that collect US coins. And to a US coin collector, cleaning coins is taboo. The folks in the ancient forum here are an active and extremely educated group that don't have the qualms about cleaning a coin that US coin collectors tend to have. Hoping maybe a moderator can maybe move this to the ancients section where you would be certain to get some useful feedback. If not, I think you would do best to post your question in the ancients forum in a day or so.
    okbustchaser likes this.
  5. cpm9ball

    cpm9ball Cannot Re-Member

    Hey, Doug @GDJMSP ! Can you move this to the "Ancients" for the OP, please?

    TIA! Chris
  6. denmother43

    denmother43 New Member


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  7. denmother43

    denmother43 New Member

    Thanks. I will repost in the ancient forum. Not sure how to do it, but I will try..
  8. desertgem

    desertgem MODERATOR Senior Errer Collecktor Moderator

    I moved it and deleted the second thread. Any copper based coin does extremely well in dry desert like conditions , such as the coins location. But water and any chemicals such as swimming, soaking and prolonged showers can oxidize the surfaces of the coin. As was mentioned in the US coin areas, cleaning is not preferred there., especially copper/bronze as it can turn a pink color . Maybe they can help you here with it. Jim
    Stevearino and Randy Abercrombie like this.
  9. Plumbata

    Plumbata Well-Known Member

    It doesn't look bad to me, but I suspect that the darkening you've observed is due to the patina and remaining dirt absorbing natural sebaceous bodily secretions.

    When I get bronze coins that are clearly "greasy' from excessive handling or undesired treatment I dip 'em in acetone which dissolves the fat/wax/oils almost immediately.
  10. Ken Dorney

    Ken Dorney Yea, I'm Cool That Way...

    Buy a replica coin he can wear. That way you wont have to worry. If you clean it you will destroy any value it has as a coin. Right now it looks just like it should.
  11. ancient coin hunter

    ancient coin hunter Cogito Ergo Sum

    Kind of a cool coin. Good advice above.
  12. David Atherton

    David Atherton Flavian Fanatic

    Just out of curiosity ... why is this called a 'Masada coin'?
  13. Ken Dorney

    Ken Dorney Yea, I'm Cool That Way...

    Because it sells to tourists easier that way.
  14. Finn235

    Finn235 Well-Known Member

    That coin is as clean as it will ever get - you can't remove patina without wrecking the coin.
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