The sellers on E-Bay really crack me up. Take a look at this Franklin Half Dollar that the seller claims has NATURALLY toned surfaces. The rest of his description is equally hilarious. This is my favorite line: PATINA MEANING THAT THE COLOR SHIFTS WHEN THE COIN IS ROTATED IN DIFFERENT ANGLES. Anyway, here is his photo of his NATURALLY toned coin. http://cgi.ebay.com/1957-FRANKLIN-HALF-NEON-RAINBOW-TONED_W0QQitemZ260352030427QQihZ016QQcategoryZ11973QQssPageNameZWDVWQQrdZ1QQcmdZViewItem I think this surfer swallowed too much salt water.
I've seen worse "NT" coins than that on eBay. It's sad but somebody will buy that coin - because they like the colors - thinking it is NT. If they (or their estate) ever try to sell it to someone that knows NT from AT (e.g., a competent dealer) they will be sorely disappointed.
Well "Naturally" he held a propane torch to it, so it would match the tailpipe of the Harley he bought with his profits!!!