I got these two Kennedy's a couple of weeks ago. As you can see in the pic, the PCGS graded coin has toning mainly on the "exposed skin" of the portrait. The NGC coin is provided simply as a reference. Any ideas as to if this is natural or did the Mint produce coins like this? Obviously, PCGS had no problems with it. Still working on the picture taking skills! Both coins look much better in hand than the pics show. Thoughts?
I saw one similar to this once before, but for the life of me, I can't remember where or when. Old age $uck$! Chris
A few years back, I did an experiment where I stuck a bunch of coins in some manilla coin envelopes for 1 year. The result on most of the larger modern proofs was that the toning occurred predominantly on the devices which were either touching or in close proximity to the paper. I am not saying that your coin was toned in this fashion, but it certainly is a possibility.
I don't recall if I ever posted that one, but I know that I have posted this one and I am sure that you have seen it before. This was a great looking coin that I had purchased for my toned 20th Century type set in the NGC Registry. I bought it for $20 in 2008 and sold it for $46 in 2012. Same general toning pattern with light brown toning on the devices and lettering. Since the reverse is completely untoned, my guess is that this coin sat face down on a piece of paper for quite some time.
