Mike, I saw the article about that coin - very fascinating and still conversial. Should be interesting to see what it brings. I'd still rather have a 1943 copper penny. http://www.coinlink.com/News/us-coins/controversial-1959-d/
So many coins, so little time and money.......... I like the idea of a '43 bronze cent, a lot, but I'm going to to with the a high end condition 1793 Chain cent.
If authentic, it is a unique US coin. What other US coinage exists as only a single one? I find it interesting that the US Mint (via the Secret Service) has stated that it is authentic, but the TPG's (originally asked very early on, and possibly before the Secret Service's opinion) won't grade it. In any case, I'll take a look at it next Saturday.
http://goldbergcoins.auctionserver.net/view-auctions/catalog/id/3/ Lot 817 Lincoln Cent. 1959-D The Unique Wheat Ears Reverse!. MS60 May 31
My choice would be an 1861-O Proof Half Dollar. After all, some people think they exist, and some don't.