Leica Summicron STM 5cm f2 Collapsible Lens - CLA'd by Youxin Ye in July 2024. His report follows:

Note:  CLA’d.  Cleaned and lubricated both aperture and focus rings.  Cleaned aperture blades.  Cleaned optics removed haze inside.  The lens is clean and clear now considering its age.  Tested the lens with digital M body, the lens is in focus and produces good images.

This lens was manufactured in Germany in 1952

 

993955