Great link- thanks! That really helps illustrate the points. btw, I just love CT for the members, and for the great look and feel of the site - popping over to other forums reminds me of how great CT is.
Two reasons, as said already, 1- to stop possible damage from corrosion. 2 - money. The second reason is a biggie. A coin that has dark, heavy toning (not terminal toning) is very undesirable to many potential buyers. But, dip that dark, heavy toning off and you just might end up with a coin that is worth multiples of what it would bring at sale if left alone. Yes, moisture always is a problem. But the real problem, the root of the problem, is air. That is because air contains all of the other bad things including moisture, and that causes toning, and eventually corrosion. We fight against air getting to our coins by using proper storage methods. And that's really the best we can do.
So, to piggy-back on this topic, has anyone used one of these: http://www.ebay.com/itm/230909376850 They're plastic, not wood, and designed to hold airtites. The one I linked is for the "H" size holder.
Thanks for the input. It looks like the boxes might also be made by Airtite. I didn't find this page the first time I looked: http://www.air-tites.com/air-tite_coin_storage_boxes.htm#.URFuXx2Yt8E The eBay vendor sells a bunch of airtite stuff, and the picture looks similar to what is shown on the above link.
Geez Doug, I was trying to simply assign noble "coin preservation" reasons for dipping a coin in such a situation.
Well unfortunately Chris most people don't do it for "noble reasons". They do it because they can make money from doing it. That's just reality.
It's only "noble" if you spend an arm and a leg to have it dipped, I mean "conserved" by a company like NCS. Apparently.