It looks older than 1951 though I can't remember exactly when they changed them, it has the early back body and seats. Latter 80" had a recess for the seat backs and squarer seat backs that were hinged. Also it has narrow front springs with the shackels at the front. Looks like it has the latter type gearbox with selectable 4 wheel drive and not the ring pull job though. Might be one of the last 1.6 ltr's
Will make a nice project for someone.