Thread: The engine number is different

AlexH and myself when to visit Joe of KL Bulldog tractor fame today, had a look at both of his 80"'s, the one inside was too buried under goodies to look for serial numbers, but the one outside gave up some secrets;

Chassis number 3661107, engine number 45108721 .

That engine number was verified by both AlexH and myself, after thoroughly cleaning the spot were the engine number is stamped.

The engine number is 45'--- , does that make it out of a Rover car?
.

I also have an odd engine number on my 1950 80"
Engine number 17091688. Has anyone got any ideas?