green color. Or the green toning or green spot from touch with PVC Nylon, if there is green toning (1 color) How regular colector will know If it green toning or spots? I think it will be big problem to detemine what is toning and what is spots. Please see that silver coin in the link: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=380121959000#ebayphotohosting Thank you.