I have a '90s R100R that has had the VIN plate changed by the State of Maryland. According to my internet search, Maryland changed VIN plates if it was rebuilt after an accident or if it was a theft recovery. I am trying to figure out how old it is because the dealer always wants the VIN when i order parts. It is currently listed as a 1996, which must be when the VIN plate was changed. I was going through some correspondence with the PO, who thought it was a 1994 or 1995. However, the colour is Amethyst Metallic which as far as i can tell was only used in 1992. But if parts have been changed, the tank, side panels and oil filter cover may also have been changed; the paint code on the frame is 685 which matches the motorcycle colour. However, there are no marks on the frame, engine, or other components to suggest it was in an accident. The key fits the ignition, bags, seat lock and steering lock. So if not an accident, then it was a theft recovery, but why do the keys all work? It also has a double front disk, which was standard in 1993 but available for 1992. It is a puzzler to be sure. I have found some numbers on the bike, but can't seem to sort it what they mean. Frame number (stamped on frame by centre stand): 58815 Engine number (stamped on engine plate): 03/92/0395 (does this mean the 395 engine of March 1992?) and NBM 098042A2 Transmission: 0209241AA1 (last number may be an "I" rather than a 1) Does this make sense to anyone? Should all of these numbers match if it was assembled in the factory? I read somewhere that the numbers did not match on the later airheads, but I can't remember where i read it. I have tried RealOEM, but i couldn't sort it out without the VIN. The bike runs and rides fine and tracks straight, so I am not concerned if it has been pieced together. But enquiring minds need to know. I would also like to know for parts or in case i ever decide to sell it. Any help would be appreciated. Thanks in advance.