Hi Grumpy, thanks for the reply. The numbers were taken directly from the engine plate and the last set were from the section actually labeled Serial not Code.
I will take some photos of the engine plate plus ones of the mower tomorrow morning and post them on here but as I said in my previous post, I'm amazed at its condition, not a spot of rust on it and the alloy cutter deck is superb. Even the handbrake works well but I'm not too sure that the drive clutches are working as there is very little movement in the drive foot pedal. I haven't yet tried to start it but a quick pull on the recoil shows there to be good compression.