Some oxidation on the copper coin

I'll write that one down for future reference.

 

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Wow, another helpful hint...CT is getting like Hints From Heloise...

 

That hint was a joke. It might actually work though.

 

I've heard multiple accounts of it indeed working. The rice does a similar thing to the commercial dessicants, though it has a limited capacity to hold water, so you need to use a lot more of it. You can bake it out after it reaches saturation and re-use it.

 

I've heard it helps dry out cell phones.

 

I thought NGC provides warranty for the copper coins up to 10 years. So if the coin slabbed less then 10 years ago, they should re-slab it for free. NCS probably will charge for their services.

 

They warranty the color designation for ten years. They said this one was brown, and it still is, so no warranty claim that way.

 

It CAN and DOES develop inside the slab, and whoever told you slabs are air tight LIED to you.

 

Use a bank on high ground, not near a river.

 

Been there, done that. Not with a phone per se, but with earbuds that went through the washer. A week in rice and they work good as new.

 

That's a good start. However, vaults have been flooded by plumbing leaks or fire sprinkler activation too. So having a box high off the floor is always a good idea. If the vault is in the basement, don't even think of renting a box there.

Cal

 

I had hundreds of NGC, PCGS and ANACS slabs go under water during Katrina and all but two (one NGC and one ANACS) were filled with water when I got them out of my safe. I had much bigger problems at the time, but this was pretty upsetting to say the least. Many of the coins were later conserved by NCS free of charge. I still greatly appreciate their kindness and generosity for doing this for me.

 

Did NGC/NCS at least get promotional "props" for it? I just added it to my "Why I prefer NGC" file.

 

Thanks for the sage tip. I am renting a new SD box tomorrow for my best stuff that's still at home as of today. That is, if I get done choosing what I'm schlepping to Denver.

 

Correct. None of them are air tight. The new PCGS ones are water tight for a period but I don't think any of them have ever claimed to be air tight, people just assume that one I guess

 

There are all kinds of technical reasons why being "air tight" would be a very BAD thing, most of them having to do with entrapped moisture. Both of the "Big 2" are in humid locations.

 

If air can get in, then water can too. Water vapor is a gas not a liquid, although it can condense into a liquid.

 

So can air

 

Not to mention I am sure the cost of grading would have to significantly increase as well.

 

I don't think that they ever claimed it or tried to even pat themselves on the back for it. I was working with a pretty prominent dealer in New Orleans at the time and even though he never admitted it, I'm pretty sure that he called in the favor for me. I had the coins stored in a vault debating what to do with them and didn't even know that they were shipped out until I got in one morning and they were sitting on my desk.