The Zeiss Ikon Tenax II is a compact interchangeable-lens leaf shutter rangefinder, smaller than even a Barnack Leica (though it's a bit thicker and definitely weirder). Light haze in the 4cm f2 Sonnar lens, accurate shutter and rangefinder. Film winding and shutter cocking are done with the large lever mounted on the front of the camera. Also, did I mention that this camera takes 24x24mm square photos? Because yeah, it does. Cosmetic condition is very good, with minor wear, and the usual "Zeiss bumps" under the rear leatherette. An unusual camera in good working order, which is also unusual.