Jerry-
What you have there is definitely the Deluxe seat! (I'm the guy who had the two seats reupholstered.)
I'm afraid I can't be of much help though. I took these two seats into a small "hole in the wall" local upholstery shop. The guy did the first seat and it came out beautiful. My seat did not have ANY of the original vinyl left on it, so we had to use that original brochure pic Kraig posted as a guide. When I went to pick it up, the guy charged me $80 to do it. I wasn't happy with the price, but the seat looked great. When a friend found the second seat, he had me take it back to the same shop. When I went to pick it up, it looked like crap so I made him redo it. (He admitted that it looked bad...I think he was drunk when he did it.)
Anyway, that shop went out of business shortly after that. If I were you, I would take that original seat into a local upholstery shop (with the original vinyl intact!) and see what they can do for you. (Again, make sure you save the old vinyl so they know how to make it!)
If you have the ability to spend some time with a small chisel and hammer, you can open up the old "pinch" on the seat-pan and get all of the crusty vinyl cleaned out then remove the old foam and vinyl and get the seat pan cleaned up and repainted. That will help your upholstery guy so he's not starting from the ground up.
Keep us posted on the progress. We don't see a lot of these seats all redone.
Charlie-
I'm not in Maine, but you've got my interest. What up???