Thanks for all your input. Here is where it stands. (1) I paid the money! I received the title with it's release signed off by the registered owner (not the seller) and I have a lot of documented history of the bike up to about 2004 and I have a key! The bike was picked up by the carrier last Friday(12/22/17) and I have photos of the bike being loaded into the truck...so it's on it's way here! Yes, I agree that the seller should have executed a bill-of-sale but every time I pushed for it he pushed back that it was not necessary in California (citing his 20 years of experience bbuying and selling bikes in Oceanside some years ago). I will wait until I receive the bike where-upon I will pay the fee to the INOC and see what factory records I can get. I will also get the mileage, engine number and frame number verified and authenticated. If I get not red flags I will fill out the title with my name, date of sale, sale amount and go to the DMV and see what I get.
Many of you are probably thinking that I ran through some red lights getting to where I am now and YOU ARE RIGHT! I've looked at Nortons for sale for over 3 years and until I saw this one I didn't think the iones I saw were for me. This one called out to me, especially at $8500 for a 1976 Interstate with less than 4500 miles!
I also have found a fellow that lives not too far from me that has 30 years experience rebuilding Nortons (he currently owns 4, 3 750's including 1 Combat and a 74 850) and he has agreed that he will help me assess the condition of this bike. I know it has a Boyer ignition ans that it has had some minor repairs over the years (discs, carb rebuilds, etc). I'll keep you all informed. The projected delivery date are between Jan 10th and the 19th...or sooner. Peter