Notice the damper in the pic of the first test bikes. Like Terry said a while back, Honda cheaped out, just like with the dual front brakes: mounting provisions were made from the very beginning, but weren't utilized, apparently to keep costs down.
What carbs are on the bike in that photo?
That's a picture of one of the test bikes that Honda used in the Nevada test runs, after they were introduced at the new bike expo. You'll notice the back of the clutch case is different, too. The carbs were 28mm Keihins that strongly resembled the ones from their racing bikes: too expensive to put on production bikes. If you study that picture long enough (boy, I sure did when it appeared!) and then look at a K0 sandcast, there were over 40 visible differences. Then if you study a sandcast vs. a K1, there are over 20 external differences again.
The only "production" 750 I ever saw with a factory damper was that odd 700cc bike at Mannheim Honda (near Chicago) in 1970. It was outwardly a sandcast 750, but it had sucked a valve: when I saw it the engine was apart and they were trying to find a valve, as it was not a CB750 intake valve. Smaller bores, longer stroke by 2mm, had a steering damper that resembled closely the ones from the 1964-67 CL72/77 (250/305cc) Scramblers, but was shorter and thinner.
Terry, does this sound like the one you have? It mounted to the lower triple tree with a ball-joint bolt and a castle nut (with cotter key) and to the crosspiece on the front of the frame, under the tank. There was no long "adjuster" rod sticking out of it, as was found on the ones in the famous "racing kit" from Yoshimura. I don't think it had any adjuster at all (much like the Scrambler versions).
