3/4 or 1 ton -1940

[firemancooter]

Hello all, my first time asking a question here ( I'm sure there will be lots more). My absolutely beautiful wife surprised me recently with a 1940 pickup, while I'm sure it's a one ton I would like to be positive in my assumption. So my question is what is the difference between a 3/4 and a 1 ton? It has 14 leaf springs and 7 override springs. From what I can find online I know it's one of those two according to the wheelbase. Thanks