This is an Exceptionally rare, 1957 Production 5cm, 2.0 Ridged Summicron in black Paint #1465745.

The batch of lenses in black paint from 1957 are typically found on the Leica MP Black Paint from the same year.  There were only 138 MP's produced in black paint, so one can deduce...

Give your Leica a classic look with the new Black Chrome 50mm Summilux-M ASPH and 35mm Summicron-M ASPH. The matte black finish over a brass body gives these lenses a classic look and feel. The 50mm Summilux features a different outer design then the current model. Harkening back to...