engine numbers were used most places as the title "vin" back then, so if you're talking about ownership history tracking, you're likely out of luck .... nothing on the frames in the 40's, the only other identification number of interest would be the factory serial and model ID number plate that should be on the pass side cowl under the hood, but that'll just confirm the year

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics