Canon Serenar 50 1.8 chrome. I had this lens CLA'd two days ago and now I'm changing my setup. In amazing shape for its age. Focus is smooth and aperture snappy. Glass is clean with minor dust.
The bokeh on this lens is fantastic.
Comes with 40-43 step up ring and B&W UV Haze filter and is very necessary for a classic lens like this. $40 value.
The total for this lens with step-up and filter is $200