Well, I tried but no luck. The wheel part numbers in the '72 and '73 book do not go up to the 3699xxx series. They are in the 34xxxx/35xxxx and low 36xxxx series. The '74 book has a #3699101 15" wheel. So I am guessing 3699117 is a '75/'76 wheel. I do not have any books newer than '74 to look in.

Maybe someone has one of GG's books to look in.