Currently there is a "Black Shadow" listed for auction by an Australian auction house. The bike looks fine but the numbers do not. After an e-mail and a phone call it transpires that the bike is indeed of doubtful parentage. The difference is, of course, tens of thousands of dollars and the possibility it is a stolen machine. What rang the alarm bells was the bike is supposedly a 1951 model but has HRD crankcases and the crankcase mating numbers are more like 1947 vintage than 1951. The vendor may or may not be aware of this anomaly (I do no know whether he is a member) but if he is not then he is in for a rude shock. If he is aware and is trying to perpetrate a fraud then I hope he comes seriously unstuck. The auction house is now taking the appropriate steps to either modify the description of the bike or withdraw it.