Actually, I got my answer.
There are a couple of San Fran era G-series rods on ebay right now that are built exactly the same as mine. Go figure!
One of the ebay rods has an original rod tube that does say San Francisco.
The original owner of my San Fran era rod bought this fairly early in Scott graphite history and recalled that the rod came in some type of cardboard/fiber tube from the factory and had a aluminum case made for it for better protection.
I came across this on the internet:
[As famed outdoor writer Thomas McGuane stated in his book The Longest Silence: "I have an eight-and-a-half foot Winston for a number-five line, a rod I've followed throughout its evolution of materials. This one is of IM6 graphite and in my view is the five-weight trout rod against which all others are measured, although the Scott of the same size is right in there. These are the best for the small freestone rivers of the kind that I often fish." (The Longest Silence, (2001) Vintage Books, p. 265)]
I would have to agree with Mr. McGuane, the early 8'6" 5 wt G-series rod is one sweet rod. I'd also agree with the 8'6" Winston IM6 as well!
Thanks for your thoughts.