This is a nice Zeiss Opton Sonnar 50/1.5. The issues are a very light faint coating mark on the rear optical surface AND a scratch on the front surface as shown. Otherwise very nice cosmetic condition as shwon. No oil on blade. A very good user lens if you want to keep your collector grade in your dry cabinet.
Comes with a cheap front cap, ask: HK$2000!!!!!!!!!!!!!!!!!!!!!!!!!!!