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<p>[QUOTE="RickieB, post: 67513, member: 2486"]The original Mint envelopes contained sulphur as well. If the coin wrapper had a micro hole in it the action of humidity can transmit sulphur ions into the breached packaging and contaminate the coins surface.</p><p><br /></p><p>That is one possibility....I am sure there are others...stay away from unopened envelope claims.</p><p><br /></p><p>RickieB[/QUOTE]</p><p><br /></p>
[QUOTE="RickieB, post: 67513, member: 2486"]The original Mint envelopes contained sulphur as well. If the coin wrapper had a micro hole in it the action of humidity can transmit sulphur ions into the breached packaging and contaminate the coins surface. That is one possibility....I am sure there are others...stay away from unopened envelope claims. RickieB[/QUOTE]
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