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Coin Disolouration

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New Member

United Kingdom
3 Posts
 Posted 02/19/2005  4:48 pm Show Profile   Bookmark this topic Add circushead to your friends list Get a Link to this Message Number of Subscribers
Hi All
I have been collecting Royal Mint Siver Piedfort proof coins for 15 years now. I bought the Millenium collection in 2000 (obvioulsly!) which contains all the UK coins in silver and also includes 4 Maundy coins. I bought this to hand down to my nephew who was born in 2000. the set is kept in its original packaging in a box in a spare room. I opened this set the other day when I was having a clear out and to my horror noticed the Maundy coins and the obverse of some of the other coins had started to turn yellow.

I looked at some of my other sets and have seen varying degrees of this but other coins have no evidence of this. For example, the first silver piedfort coin I bought was the new 5p in 1990. This coin is pefect with no problems. I have a 50p from 1994 which is also perfect with no discolouration but a 1997 50p is yellowing on the obverse.

I contacted The Royal Mint as I could not understand why some of the coins were discolouring and some others were not. All coins were kept in the original packaging and in the same box. The Royal Mint say this is normal!

I didn't expect these coins to change colour and I am very dissapointed at this. Is this normal for silver proof coins to go yellow. this millenium set is only 5 years old and I would not expect to see this colour change.

can anyone give me some advice on this. Should I send these affected sets back to The Royal Mint or is this something I should expect to see as time goes on?

I look forward to your input.
Thanks
Circushead.
Valued Member
zakgold's Avatar
United States
382 Posts
 Posted 02/19/2005  5:05 pm  Show Profile   Bookmark this reply Add zakgold to your friends list Get a Link to this Reply
Welcome to the forum!

Silver easily tarnishes unlike gold and other noble metals (Pt and Pd) that don't tarnish or oxidize. Sometimes the very container can contribute to your "toning" as there is a bunch of chemicals and gases that combine with that certain amount of humidity and certain temperature to cause havoc on our coins.

For instance, The dark purple-blue-black silver tarnish that most of us are familiar with occurs when the outer layer of silver reacts with sulphur. This sulphur can come from a variety of sources, including: from one's hands, from storing or displaying the silver near objects or substances that give off sulphur, and from the air around us (air pollution).

As for getting your money back from the mint...it is not going to happen. These containers are not air and/or water tight and the mint can always waive liability due to the age and having no control where the coins are stored.
Edited by zakgold
02/19/2005 5:07 pm
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Susanlynn9's Avatar
United States
5877 Posts
 Posted 02/19/2005  9:32 pm  Show Profile   Bookmark this reply Add Susanlynn9 to your friends list Get a Link to this Reply
Welcome to the forum, Circushead!

You may want to consider removing the coins from their original packaging and storing them in airtites. This would give you the best chance of stopping the process.
New Member
United Kingdom
3 Posts
 Posted 02/20/2005  03:41 am  Show Profile   Bookmark this reply Add circushead to your friends list Get a Link to this Reply
Hi
thanks for the info. Does this toning affect the value of the coins?
Cheers
Rest in Peace
catman's Avatar
United States
954 Posts
 Posted 02/20/2005  04:50 am  Show Profile   Bookmark this reply Add catman to your friends list Get a Link to this Reply
That depends on who your asking Circushead. Some people like toning while others don't. I don't because it is damage to the coin and once it starts it's hard to stop.

catman
New Member
United Kingdom
3 Posts
 Posted 03/11/2005  3:29 pm  Show Profile   Bookmark this reply Add circushead to your friends list Get a Link to this Reply
Hi All

The Royal Mint say I can send them back? Are they able to do anything with the coins to remove this toning?

Thanks
david
Pillar of the Community
SFDukie's Avatar
United States
980 Posts
 Posted 03/11/2005  5:13 pm  Show Profile   Bookmark this reply Add SFDukie to your friends list Get a Link to this Reply
Welcome circushead!
Unfortunately I know nothing of Royal Mint return policies.
If the coins are still attractive, perhaps you shouldn't worry, but try to keep them from toning further. If they've been in a damp area, put them where they'll stay dry- perhaps toss some silca gel packets nearby to absorb moisture. Try to keep them where they won't be exposed to temperature extremes, particularly heat. You may want to put them in airtites, or intercept shields- the latter have absorbants/chemicals designed to neutraize trace harmful gases such as air pollutants. Latter run about US $1 each, former a bit less. If you do transfer them, handle them by the edges, and consider wearing cotton gloves so as not to scratch or fingerprint them. Here in the US, some feel that white plastic trays some mint products come in which support the actual clear plastic coin holder may cause toning or hazing. nohope587 is a board member here who is knowledgable re coins and is a British expat. I think he is currently off on business, but he may have some useful advice/input when he returns-he is also the numistmatist who tipped me off re the US mint plastic trays.
Don
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