Primary case, inner gearbox hole cover plates, Norton c1952+

Primary case inner gearbox hole dust cover plates for Norton featherbed models and singles with large slot for the gearbox shaft  (set) approx 1952+.  This is the metal seal for the gearbox where the shaft enters the front chaincase.  Complete set with both plates and 3 rivets. (will not fit early singles primary case with narrow slot)