Allen--47902 would be a correct number for a company-service CN car that was confined to CN rails. But CN 47902_ would have been a 40', 10' i.h. steel boxcar, built by Canadian Car and Foundry with a flat panel roof and square-corner SDE's in May or June, 1940 (Swain series 10). I take it that the final digit of the car number is missing, or ??

Steve Lucas.