Leica Summicron R 50mm F2.0 E55 V2 (3-Cam version)
**Lens in excellent condition – no scratches, no fungus, no haze**
With build-in lens hood, original front and rear lens caps, and box
Version 2 (3-Cam) for R and Leicaflex, not version 1 (1-Cam for Leicaflex only with separate hood)
https://mbphotox.wordpress.com/2016/06/04/summicron50mm/
Design by Walter Mandler
http://www.marcocavina.com/articoli_fotografici/Leitz_Summicron-R_50mm/00_pag.htm (Italian pls use Google translate)
https://www.filmformatt.com/leica-summicron-r-50mm-f2-review/