Antipodean Spitfire
Let’s not forget the antipodean Spitfire, the mighty Victa Airtourer 100!
Located aft of the lawnmower-pull-to-start-handle and between the P1 and P2 seats, the Victa square-shaped spade grip (shovel?) allowed either the Captain or the First Officer to resume control in the event of an auto pilot malfunction.
(And it’s really quite a nice little aeroplane, on a cold day).