Interesting discoveries about my newly acquired 1929 "Model A". I've just received the dating certificate, with a copy of the entry from the despatch book. It appears that the Model A is actually a Model B and was made for export to Sweden - which presumably explains the speedo calibrated in KMH.
It was also originally fitted with the twist grip throttle, instead of the lever that has since been fitted (and is clearly not original as the throttle and air levers are stamped "exh" and "mag"!). I'm tempted to change it back to a twist grip, if I can find one of suitable vintage. The gearbox must have been replaced with a Sturmey Archer one at some stage, as it should have a Burman (and the number does not match the despatch book). Presumably the front mudguard has also been changed, as I think it should have had a bigger "valance" at the bottom.
I wonder what happened to it - whether it actually got to Sweden. The current registration number is Glasgow pre-1932 by my reckoning
The next question is, is it worth telling the DVLA...?