Leica kicked things off on December 1 with a look at a Leica camera that was never released to market. The Leica 110 was made for Kodak’s once-new Kodacolor II 110 color negative film. This 13x17mm format was made for small, compact film cameras, and Leica wanted in on the action. Ultimately, Leica abandoned the 110 camera, and all parts and prototypes, save for the one in the video below, were destroyed.
Source: The Most Special Cameras, Lenses, and Photos in Leica’s Archives | PetaPixel