I think that's a 16mm Steenbeck. Hardly anyone cut 35mm on a Steenbeck. Almost all (maybe 98%) of 35mm (99% of feature films) were cut on flatbed machines by KEM of Germany. They came in 4, 6, and 8 plate models. The 8 plate (the industry standard from 1980-2000) was versatile in that the picture and sound heads were interchangeable. One could use 3 picture heads and one sound head if desired or 2 pic 2 sound for normal source/target editing, as it is thought of today. The KEM was big and heavy and very complex to maintain. The were only a couple of people who knew how to fix one and they were the busiest guys in the world. The advantage of film, from an editor's stand point, was that it was only possible to have a single version of the show at a time. With computer editing, an infinite number of versions of the same thing may be stored and accessed at any time. This complicated the editor's task greatly. In the film days we had only the one strip of picture and a single track of audio. We made the movie work at that level of simplicity first, then added all the special visual effects and sound effects, at the end. It was a better way to make movies. It required more thought and preparation. It required that you have a good script BEFORE starting to shoot the movie. Now...not so much. We fix it in post.