Basil, Your neighbors 100 m looks great! What luck to find 1 in a salvage yard and discover the history of it being the first one produced! I had similar luck (not as good as theirs but still good) as our bn7 tri carb I found that had been parked for 30 + years is the number 14 on Bill Boltons tri carb registery. It's currently being restored in it's original old english white ,red interior, and disc wheels.
Sure do enjoy this forum,appreciate what you do! Bob G