Questions about toning.

chasingerrors

I have several certified (all are NGC) morgans I purchased about year ago, that when purchased had no toning. Now the other day I was going through them to weed out duplicates and upgrade candidates, and what did I find on some of them, was this unsightly toning. In one instance the rainbow effect had started just slightly, but the others its a sickening off yellow. In one case the it was over 75% of the coins surface and not even at all. I'll do my best with pics. They will be somewhere on this post or linked elsewhere. My question what did this come from? Improper storage? By me? Or before my purchase? I store them at room temperature, although I do live in a some what humid area of the country. I guess the the good news is these are realatively cheapymorgans in average grades and none of my exspensive ones were affected. Any help will be appreciated. Links here. Warning pics are large.1 2 3 4 5 6 7

ddbird

The toning doesnt bother me as much as the finger prints...which was most like NOT cuased by you. Improper storage may have expediated the toning, which could be your fault, or the air where you live. Not sure though...I do like the last two though..

coinguy1

Most of that toning looks like it's been present for quite some time.

It's hard to tell for certain from the images, but my guess is that what you're seeing is toning occurring due to climate and storage conditions and NOT due to having coins that were dipped, improperly rinsed and now retoning.

You might consider a coin storage product such as Intercept Shield.

morgannut2

Without getting into what's going on, the solution is to hook up with an authorized dealer and have them send a letter with the coins stating you would like all foreign oxidants present on the surfaces neutralized. I did this through a PCGS dealer and they took care of the problem at the cost of a new holder. I was very satisfied. Of course NGC/NCS can also conserve them and when the sulfur compounds/other chemicals are properly removed, the coins won't change color. Include a silca desicant (from drugstore) to slow further oxidation.

chasingerrors

Well thanks for your help, I' ll do some research and try to change up storing methods, maybe even those intersept shield you guys were referring too. Trying to build a complete certified set and find things like this happening slows the pace some.