fredski,
The Engine number is stamped onto the frame, however if your car is a 1930 Canadian Manufactured car it will likely not have the number on the frame, as this was discontinued.
The Body number is a different story and if it exists it will be on the left side near the seat riser or door.
My 1930 Canadian Standard Phaeton has body 6F1903, your number sounds more like a body number than an engine number.
Although, by 1930 Canadian engine numbers were CA plus another letter and numbers from 1 through 10,000. So it is possible your number is the last four digits from the engine.
Darryl in Fairbanks