don't know about the "1/2 C.W.T." [cwt is hundredweight, which is 100#], but if the "2 ton max" is the GVW, then it's a regular 1/2T w/ the regular 4000# GVW, and would have 'heavier' looking springs than modern trucks - how many leafs in the pack is a better indicator, altho that could have been changed in the last 50 years
as 3B points out, if it's 125" WB it may be a 3/4T, if less than it has to be a 1/2T as they didn't make short 3/4's - also if it's a flatbed there's no tellin what's been done
Bill
edit - back in the day, Holden's Chev trucks were made in Canada
