Leica Apo-Summicron-M 2/50mm ASPH. Leica Apo-Summicron-M 2/50mm ASPH., Serial Number 4695657. The Leica Apo-Summicron-M 2/50mm ASPH. Features of the Leica Apo-Summicron-M 2/50mm ASPH. : Modern optical performance paired with classic M-mount handling.
eBay