There was one quite similar to this one on eBay. This one I do know some of the history and am pretty sure it was not on. Sadly, this one was an impound bike and painted a few months ago. I cannot believe someone would let a bike this rare go to the impound auction.
I have a friend whose track bike is an RC51. I recently sent him my knee pucks since I'll never use them. He has removed all the original bodywork and bolted up some cheaper race-type plastic so it won't hurt so much when he falls. Some moron on a Ducati parked it in a turn and caused him to crash, but the cheapo body panels held up fairly well. He was also able to find a dented tank on fleabay, so he stored the original along with the original exhaust pipes. When it's done as a track bike, he plans on putting it back to stock and keeping it in his living room.