I admit that I don't like "all" toning, but wow, that coin is absolutely gorgeous! ... and although a nice blast-white looking coin is certainly the goal for a "purest", who won't accept any change from the coin's original minted appearance, I think that this coin is kinda like a beautiful autumn maple, that has turned from its original green leaves to a gorgeous blend of autmun colours (pretty artsy, eh?) ... anyway ...
=> so to "me", this toning makes this particular coin more unique and more valuable than if it was still in its original blast-white condition ......... I'm just sayin'