Its a Canadian model.

The grill says '54 or '55 1st. 1500 sounds like a Canadian model number and the Ontario plate fits that.

It looks like its the same as a 4400 or maybe a 6400.

Looks nice.

1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...