Leica Summicron 3.5cm/2 Prototype M39 'Ernst Leitz Canada'

experimental 8 element Summicron, unusual early designations 'Ernst Leitz Canada Ltd. Midland', the helicoid engraved 'Germany', designated touch point on the focus ring at 4 meters, according cut-out in the aperture setting ring, very nice condition, two small scratches in front element, specially adapted IROOA hood with cut-out for placing it upside down for transport, rear cap (in white!)