Hi!
Now I saw what number you looked at. That is the magneto number not the engine number.
I shall look into my old records if I can go from back….. In the delivering books they start with the engine number and then were it is delivered, not always, and the magneto number.
I also noticed that the armature plate was machined to hold the coils ,that you had in the pictures ,wich are not original.
Regarrds,