Carl has my early 750 box of parts. He will post a pic later. They include a flange in either steel or aluminum with 10mm holes. And an early trans fork with 10mm holes. With respect to the flange - picture posted earlier. I would prefer the steel one. I suspect the aluminum ones have work hardened by now. Also I believe the steel one is for the very early sprints and berlinas. Carl is not sure on this point.
I suspect Carl can provide a modest price proposal for all this stuff including the "rubber donut" I know this stuff is worth its weight in gold, but neither carl or myself treat it that way.
Strange how working on an article on the early 750 drive shafts leads to this.