The original single frame crank mechanism is still with this camera.  Almost all single frame cranks are lost. This is an exceptional camera in many ways. Akeley cameras were so very popular with cameramen that they were used for almost all action shots. An Akeley operator could follow fast action better than any other cameraman. Akeleys were used to shoot the chariot races on the 1925 "Ben Hur". Akeleys were used to shoot aerials and fast moving Westerns..  any shot where the camera needed to pan and tilt quickly and accurately. In the late 1920's  American Cinematographer magazine had many 'for hire' classified ads placed from Akeley specialists who were owner operators and specialized in action shoots.