Leica Summicron-M 50mm f/2 Ver.4 Silver

Brand: Leica
Production Code: 11817
Serial Number: 3613621
Year of Production: 1993
Condition (appearance): A+
Condition (Optical): A+
Item Included: Full Packing
Product ID: BZ0086
product description

introduced the "air" lens between elements in this design as well as the reduction of aberration by the last element with wider diameter. 6 elements 5 groups.