Leica Summicron-R v2 50mm f2 E55 with R-cam + ROM, made in Germany, caps, hood.
Retractable built-in hood. Manual focus. Lacking the sloped first & second cams, it's unsuited to the earlier Leicaflex bodies. This is a fairly late series lens, with serial no 3869195, made in Germany c 1999 - 2000.