The eBay examples you have posted are difficult to work with. The second example in fact utilizes a prism to generate low resolution images with a technique called frame blending.
If quality images are your project goals then take note of this UK based seller whose has been trying to his sell his complete Photo-Sonics 16mm kit for some time. I suspect he would accept an offer. I have the reflex version of this and have spent considerable monies bringing up to speck. This example is one of the best and cleanest kits I have seen. Battery, charger and even the specialized lubricants. Photo-sonics are the definitive reference for pin registered high speed intermittent transport. This eBay example utilizes twin pulldowns. Two perf 16mm stock is still available from Kodak. NFL Films was at one time the largest user of these cameras and their imagery is fantastic.
Photo-Sonics pushed high speed intermittent transports as far one can go culimiating in a very special special 16mm beast with 4 claw pulldown and 8 pin registration that maxed out at 1000 fps. Check out the photos on my public UltraPan8 Facebook page of this special pulldown, i.e.
"rare 16mm Photo-Sonics W-1 instrumentation capable of a maximum 1000 FPS. Four (4) registration pins total. This is is the fastest precision intermittent film transport ever devised. It uses standard 2 perf 16mm film stock (2R-3000).
Pics by Philip Kiel, the current president of Photo-Sonics, Inc. As per our previous Facebook conversation, i.e.
Photo-Sonics, Inc: "No, the 1W was a completely new camera. Millican had a 400 FPS camera, we built a 500, they built a 600 and our chief engineer, Roy Edwards, decided to put a stop to all that nonsense and he designed and built the 1W. It was not a commericial success. It was too expensive to produce and maintain."
November 30, 2012 at 11:31pm · Like
Photo-Sonics, Inc: "Nick, I posted a couple of pictures of 1W movement parts on the Photo-Sonics page. The register pins went through the pulldown pins and entered all four prefs above and below the frame being exposed. The film movement rotated at 60,000 RPM. It is a work or art...."
November 30, 2012 at 11:39pm · Like
Photo A = "One set of 16mm-1W pulldown pins and register pins."