At first, I thought this was Zeiss Ikon, but it's not.
The Nikon cassette is based on the Zeiss Ikon cassette, so this is either Nikon or a third-party cassette for the Nikon.
I no longer have a Nikon S or the film cassette, so I can't say for sure.
I had a Leica film cassette, and it was much longer than the one pictured here.
Zeiss Ikon cassettes have a notch in the the serrated top ring opposite the two buttons, a small indent in the protruding arm and another notch in the end of the outer barrel. And the location of the protruding arm relative to the opening is different.