Bill, my old photography sidekick, collects and restores old-timey cinematography gear, like this:
https://happyhogrot.com/wp-content/uploads/2014/04/IMG_0393.mov https://happyhogrot.com/wp-content/uploads/2014/04/IMG_0040.mov(Right-click in the viewing space if you need to set any permissions or parameters. You may need Quicktime running on your computer to activate this video.)