Leica M1 Specifications Photo Courtesy of Aaron Warrick   Leica M1 The M1 is a simplified version of the M2, especially usefull for scientific applications.  It contains no rangefinder for focusing. 1959-1964 SN# 950,001 1,102,900 Finish Chrome Lens Bayonet Mount Shutter Focal Plane Film Advance Single Stroke Lever Rangefinder/Viewfinder Coupled Frames 35,50 Rangefinder Base Length No Rangefinder Viewfinder Magnification .72 Field Selector Lever Yes Shutter Speeds 1,B,1/1000 Flash Sync Yes, Elec. 1/50, Bulb 1/500 Exposure Meter No Film Speed Self Timer No Weight 545 Grams Note: First 1200 cameras had 'button' rewind, the remainder had 'lever' rewind. Variations/Special Models Year Model Units Produced 1960-1964 M1 - Military (olive green) 208 N/A M1-Post (24x27mm format) 32