Nice bike for sure, BUT...... Short rod 750 motors, which this does appear to be, were not introduced until 1973. And I doubt the speedo with one mile showing is an original. It looks to be a brand new replacement. The needle is dark orange and the speedo has been tested to 1 mile like all new replacement units. The tach needle is faded as would be expected of a bike this age.
Oh, and it is a Rickman Metisse, not Matisse.