I am surprised that the bidding is so high. I would not bid on this bike unless the seller provided the well documented information that the Factory re-stamped the original numbers on later cases. And what luck that when the blow up occured, possibly years later, the Factory was able to provide Series B cases. I would like to know the mating numbers on not only the cases, but the timing cover, inner primary, outer primary and sometimes other parts. If you had original mating numbers on these parts and a logical mating number on the case for the time of production, that might be some good information. If there were an original letter from Vincent specifying these changes, I would have posted it with the other photos. That this information is not provided up front creates some concern for me.
David