The Hudson license plate says 1 of 67. I think it is the only one I have ever seen.

The Hudson is a 1942, has 1955 hubcaps, chevy rear bumper. 1942 was a low production year
both for cars and trucks
Hudson made pick ups from 1933 until 1947

I have seen a few Hudson PU's,  always admire their flowing lines. 

Yow!  I love them both!  Back when cars and trucks were worth looking at.