Leica I Mod C (non-standard mount)

The Leica I Mod C (non-standard mount) represents a fascinating transitional moment within Leica's pioneering 35mm camera evolution. Produced for a very brief period in 1930-1931, this model arrived after the foundational Leica I (Model A) but predates the more standardized Leica I (Model C) and subsequent Leica II. Its defining characteristic is the unique lens mount, differing from the standardized 39mm thread mount that would become Leica's hallmark. This non-standard feature suggests it was likely an experimental design or an early iteration during Leica's refinement of their interchangeable lens system for the nascent 135 format. Functionally, it would have shared the core DNA of the early Leica: a compact, precision-milled body using 35mm cine film loaded into special cassettes, featuring a coupled rangefinder and offering interchangeable lenses, albeit only with the specific non-standard mount lenses. Its rarity and status as a bridge between the very first Leica and its more mature successors make it a significant artifact for collectors studying Leica's formative years.