Kodak S-mount
The S-mount ciné lens mount was originally developed by Kodak. It was a mixture of bayonet and threaded mount. The S-mount was just used with a few Ciné-Kodak cameras, especially the Ciné-Kodak Special II from 1948-1961.
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Wikipedia
The S-mount ciné lens mount was originally developed by Kodak. It was a mixture of bayonet and threaded mount. The S-mount was just used with a few Ciné-Kodak cameras, especially the Ciné-Kodak Special II from 1948-1961.