This Leica Stereo Lens Prototype is Unlike Any You've Seen Before

Prototypes of camera bodies and lenses are among the curiosities and sometimes oddities that catch the eyes of collectors, but they often come with a hefty price tag. Make it a rare Leica and you're guaranteed to make the price double. Today's vintage find on ebay is one such perfect example: an intriguing and rare Leitz Leica M 30cm Stereo Lens Prototype. It's all yours if you have a little over $46,000 to spare.