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 Replies: 9 / Views: 1,754 |
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New Member
United Kingdom
18 Posts |
I have had to start a new thread because someone mentioned this green substance and it has started to worry me now!
Would you say this was verdigris?
If you look around the date, some lettering, the flower on the obverse and her ear, there is some greeny grey substance.
Would you say it was verdigris and if it is, is the coin worth keeping?
Thanks
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Pillar of the Community
United Kingdom
2490 Posts |
I'll add the link for those who haven't seen your other post: http://www.ebay.co.uk/itm/VERY-SCAR...p=true&rt=ncSo, if and it's a big if, it is verdigris then it is minimal. Keep it apart from other bronze or copper coins until you have time to neutralise the green. A commonly accepted way is to submerge the coin in very low acidity olive oil. This bath can take months for heavily encrusted coins but I wouldn't expect that to be necessary in this case. Take it out and check it after a few weeks. It'll be fine I'm sure. |
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New Member
 United Kingdom
18 Posts |
Thanks Alan?
I was going to pick it off with a toothpick.
Are you sure the olive oil wont devalue the coin? Thanks
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New Member
United Kingdom
18 Posts |
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Pillar of the Community
United Kingdom
2490 Posts |
The oil won't damage or devalue the coin. After a long soak, a dampened tooth pick may help to remove some of the loosened crud; but if it were my coin  As for capsules, they will stop the spread to other pieces but won't impede the spread on the host coin. |
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Pillar of the Community
United States
1431 Posts |
There's a user on this site by the name of BadThad who markets a product called "Verdi-Care" used to eliminate verdigris on copper coins. You might want to get in contact with him.
Olive oil is, I believe, slightly acidic and will damage your coin over time.
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Pillar of the Community
United Kingdom
2490 Posts |
I did say " low acidity" olive oil, and the time it would take for such light coating is minimal. As there is no direct distributorship for Verdi-Care in the UK, it tends to be expensive over here.
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Valued Member
United Kingdom
298 Posts |
I can vouch for the small 15ml bottle of verdicare which costs about £15 inc shipping. It lasts a heck of a lot longer than you would think and paid for itself on first use.
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New Member
United Kingdom
18 Posts |
It might not be verdgris, could it be any other green stuff that wont spread? Also look what I got at a bargain: http://www.ebay.co.uk/itm/Splendid-...=9703&rkt=4&Uncirculated 1862 penny, but what it that mark above the left trident prong, please don't say its the thing! grrr. |
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Pillar of the Community
United Kingdom
2490 Posts |
If a coin has been kept in a plastic/vinyl/PVC holder for a long time, there is a chemical reaction with some metals that can cause a green "slime" type of deposit. I'm unsure if this happens with copper/bronze though. If this is the case, there are simple remedies which hopefully someone else can expand on.
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Replies: 9 / Views: 1,754 |
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Posted 04/21/2014 06:57 am
