The Whittaker Micro subminiature camera 16 was a film cartridge 16 mm. It was the size of a deck of cards. It was done by Wm. R. Whittaker, Ltd. in Hollywood, Los Angeles, California since 1946. It had a built-in reflective type display. An optional sports finder was available. Detectives liked the camera as could be hidden in a cigarette wrapper empty. rare miniature spy cameras, 16mm. Robust construction: the camera body is made of an aluminum block. Plunger to transport the film. Single speed shutter 3 stops. Reflex viewfinder. It comes with a very rare film and instructions. These beautiful cameras have not been tested with the film; They are in a condition of use excellent in aesthetics (these are splendid items); Personally, I do not know the mechanisms and therefore do not know how (the film transport through the plunger, the frame counter and the shutter seems to work) work.