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<p>[QUOTE=&quot;GDJMSP, post: 3197401, member: 112&quot;]There&#039;s nothing I can add that hasn&#039;t already been said in other posts.</p><p><br /></p><p><br /></p><p><br /></p><p>If by certify you mean grade and slab - nobody will. It can&#039;t be done with coins that are still encrusted like that, let alone stuck together. I&#039;m fairly certain that Dan can give you a verbal authentication, and he may even be willing to write something out on paper for you but I don&#039;t know, you&#039;ll have to ask him. As for value, Dan will know best.</p><p><br /></p><p><br /></p><p><br /></p><p>The answer to that kinda depends on what you want, what you would prefer if you will. Left as is they make very nice historical artifacts, a novelty even, at least in my opinion. That can be a plus or a minus, depending on how one looks at it, because clumped together they would be more scarce - most found like that are broken apart, cleaned, and sold individually.</p><p><br /></p><p>The downside of leaving them alone is that they will continue to deteriorate over time - pretty much no matter how you store them. But it&#039;s not going to happen quickly really but it will happen. This is because salt water artifacts need to be kept in salt water to prevent further deterioration. Putting them in fresh water or leaving them in the open air, where fresh water in the form of humidity can get to them, allows deterioration to continue.</p><p><br /></p><p>If you wish to leave them as is and slow down deterioration as much as you can then you need to store them much as you would any other coins, in something like a small Tupperware container along with a rechargeable silica gel pack. But you don&#039;t want to keep other coins with these - they need to be kept separate, away from other coins - or you may risk damage to the other coins.[/QUOTE]</p><p><br /></p>

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