Eight Years Before the Leica

Levy Roth Minnigraph (1915) - first European serial-produced 35mm camera, taking fifty 18x24mm exposures using a special cassette.

Introduced eight years before the famous Leitz camera, the Minnigraph was still produced by Levy Roth, Berlin as late as in 1928.

See "Before It All Began" @ Dieselpunk Encyclopedia