Leica Summaron M 35mm 3.5cm f3.5 Lens w/ Goggles for M3
The f3.5 Summaron is a cult lens with great rendering.
This version was made for the M3 but will work on other cameras and people who wear glasses sometimes prefer it (Rockwell does). It brings up the 50mm frame lines but expands the field of view. This makes it easier to see if you don't want to press your eye right up to the finder.
The lens is lightly worn and works perfectly. The focus and aperture are smooth.
The glass is clean with no scratches nor fungus and only slight haze.