H16 M Series
The Bolex H16 M was introduced in 1958. Immediately it distinguishes itself from any other Bolex camera in the range at the time by only having one C type lens mount.
All the others having had a three lens movable turret. This was at the request of potential Bolex owners who did not want to own a turret camera.
The camera was less expensive than a three lens turret H16 and this is one of the angles that Bolex used in marketing the camera.
The other being that with only one lens mount which was fully integrated into the body of the camera.