The Signet 50 was a camera produced by the photography company Kodak from August of 1957 to October 1960. The camera features a selenium photocell exposure meter able to be adjusted based on the ASA speed dial on the top of the camera. The Signet 50 features a 44mm f/2.8 - f/22 Kodak Ektanar lens. It offers shutter speeds of 1/4, 1/8, 1/15, 1/30, ... Found on http://en.wikipedia.org/wiki/Greater_butterfly_orchid