How can I tell if it really is PVC? The coins are in airtite containers, I know that doesn't mean anything but it may also just be a bad scan. The coins look perfect in person. I'll double check for that discoloration on the coin itself.
I checked the constitution Silver Dollar and the "stain" is on the coin. To me it looks as if someone got a huge fingerprint on the coin. I had to pull the coin out of the air-tite container to see this and having the coin outside the air-tite container bothered me so I don't think I'll ever do that again. At least I know what to look for in the future.
You have a very nice modern commerative collection, do you collect the older ones also? I too am trying to expand my picture taking abilities, although you are doing quite well, good luck and thanks for shareing these beauties with us all, BE WELL, MIKE