That looks like a fan camera to me. The gears on the fan cameras have holes instead of shafts. I will try to take some pics at some point. I have two fan cameras, a 10 and a 16. Each size can be a little different, but most of my 10 and 16 gears are interchangeable, as they were made at just about the same time. The shafts on the governor cameras tended to be different lengths for the different size cameras