The Frilon Freiburg BR. Frilon 50mm F1.5 Lens was produced briefly in the Freiburg Factory Germany during the 1950s and it was the Fastest of all the Standard FL Lenses available for Futura 35mm Cameras.
The Futura 50mm F1.5 lenses have a unique M34 mount with the focussing mechanism part of the camera body rather than on the lens. There were a few examples available in Leica M39 Screw Mount and the rest could be modified to be used on Leica M Cameras.
It is a Rare Cine Lens due to its short production run and Seldomly Seen on the Market.