This is the top yoke fitted to a model 10 I had up until 2009 since gone to France. Assumed by the "S & M" stamped on the clamps that it was a Sammy Miller item, different to the one shown above. Bike was also fitted with what I assumed were a Sammy Miller brake pedal and mudguard stays, and an M27 "style" alloy tank with monza cap. Oh and by the way those are what I believe to be the original handlebars with built in perches for the levers.