Ebay (mine) ... cheap so far... but days to go. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1391288888
Vario shutter, no lens elements. Has retaining ring on back. Use for pinhole project. Just glue your pinhole to the fiber washer (included it fits in back lens ring) and mount to camera of your choice. Speeds B, 1/25, 1/50, 1/200; all work. Cable release socket.
Also from the same seller: Agfa Click and Clack, Ilford Sporti, etc. 120-format cameras, Diana-like as lens cameras or -- with the Clack or Sporti -- convert to pinhole use.
Sporti conversion see: http://web.pdx.edu/~harveyt/pinholecams/sporti.html 6x6, short focal length Clack conversion: http://www.kosara.net/photo/lochlomo.html 6x9, normal focal length Tom
