Tim is right about the 47-53 truck ornament. I believe the 47-53 truck hood ornament was a dealer option. I think it is the last bit of art deco design from an eariler era that got put on these trucks. I also remember a lot of AD trucks still being in use in the 70's and at least in my neck of the woods it was quite common for folks to stick all sorts of hood ornaments on these trucks. In fact it seemed like a local competition. I remember lots of birds, horses, women and even a homemade spider and web. They would find a spot on the hood where the curve was close to what they had and take out the drill.
