Originally posted by tclederman:
The 1950 Salesman Truck Data Book (Supplement) states that the rear floor on 3100 and 3800 panel body (Single Unit Body) trucks was changed to 1 piece, 5-ply.
I have what I was told is a '51 1-ton panel that I'm sure has a plank floor. Maybe I better go decipher its serial number. Perhaps its a '49 or earlier? It came without doors so that easy clue is missing.