[Tinbasher]

Do you a picture of the tailight? If it's 28 and early 29 it could be a drum style that mounts off of the body. With the "Robertson" Screws that tells you it's a Canadian car. The rad shroud says 28-29. 29 was chrome. The straight flutes in the headlight lenses say 28. Here's a copy of the Canadian Serial numbers.

Hope this helps. I'm working on a Canadian 28 Sport Coupe. And trying to make it right.