Date of manufacture? very worrying, as I type, I have an age related application with the DVLA. The frame has a despatch date of 3rd July 1952 and since the engine is the original engine, must obviously also been despatched on the same day too. Crank cases are matched, but stamped on the drive side case is the date 6-3-52 and on the timing side case is 8-2-52. Whether this indicates casting or machining dates I do not know, but how can an accurate date of manufacture be ascertained. Clearly mine took several months to come together!