may be getting older.... but not much smarter !
instead of running downstairs into the garage and scrambling with a torch.... use my noggin and removed the plate so can read it comfortably in the light.... pity it took me a year to have this simple brainwave
here goes
GENERAL MOTORS OF CANADA LIMITED
MODEL WO 72
SERIAL NO 38 444M 00 237
ENGINE RR3924689
Although the engine number is meaningless now as it has the Mexican engine in it .... for the time being anyway as she is going diesel