Looks a lot like PVC damage on the rim and on some of the high points of the reverse. Yet overall the coin still looks sensational. Still, a little surprised this one made it into a slab. Can't say I am delighted with it, but the price was reasonable so it's a keeper.
Yeah looks like PVC contamination. A general rule is that green on the high points of coins is most likely PVC because that is where the coin touched the PVC flip. Green around devices and in recessed areas of a coin is more likely verdigris. Of course NGC wouldn't have slabbed that coin with that green PVC present so it would have developed since being in the slab. The problem is that the PVC will continue to damage your coin unless it's taken care of. I would call NGC and asked them about it. This should fall under NGC's guarantee. I don't what they will do though. They might treat the PVC for you. I don't know if they would reimburse you the value of the coin. I've not been in this situation. Maybe someone who has can say.
I'm surprised. I guess they decided it wasn't PVC. But it sure looks like it. I would still be concerned if it was my coin.
The rim is the only area that you can see it without magnification. It's green, which immediately suggests PVC, yet upon closer examination it does not look pasty like the typical PVC goo that one normally encounters. It's almost translucent, and since the planchet is a rather unusual 0.800 fine silver, who knows, maybe it's just natural discoloration. And I suppose that's part of the charm of collecting non-modern ultra high grade coins, there's always some room to say, hey, it's nicer than 99% of the other coins out there of the issue, even if it isn't perfect. The obverse has some areas of almost copper discoloration, though if that were the case on the reverse and it was green from copper oxide, you would expect the coin to have a more toned overall appearance, and not white like it is.
just a joke , we are discussing my problem here about PVC damage: http://www.cointalk.com/threads/ngc-pvc-damage-please-help.242312/#post-1860620 your opinion is greatly appreciated. Nice coin BTW.
