Thanks guys!
Lee, I think the enamel on the body was probably smoother. In hindsight, I wish I had sanded it.
I studied the hot plate bulletin in the PDF section, trying to figure out what to do with painting, etc. The bulletin confirmed they manifold was nickel plated. For the pipe and arms, I stripped the old paint, tried to shine them up as best I could and then painted them with a clear enamel. One thing I probably did differently than was original is the 703 nameplate. It is hard to tell from the drawings in the bulletin, it was probably painted black, but I thought it would look good painted with the clear enamel. So far, the burners and grates have not been coated with anything. In the bulletin they appear to be a light gray. I’m assuming they shipped “as is” in gray iron. Once I have a chance to buy the 2000 degree clear enamel, I will paint them with that. (They rusted in a few spots just from cooking on them one time.)
I’m also guessing that this unit was made later in the production years. That’s only a guess. In the 1929 bulletin, this model had “truss legs”. I figure, after awhile, they switched it over to the regular legs they used on the 701 and 702 models.