Wollensak was a fine old name, but by the 1950s was owned by Revere, who marketed the Revere 33 stereo camera. Just at the end of the stereo boom, they decided to sell a premium version under the Wollensak name. The 10 had super sharp, fast 2.7 lenses and a 1/300th top shutter speed. In my estimation, it was the equal of any 50s era stereo camera. Unfortunately for Revere, it came too late and only limited numbers were sold. Most examples available today saw little use and are in excellent condition. If you are planning to shoot with a Realist format camera, this is the one to use.