Very convenient item to have if you own an Arri 2C or 3C or 16S or 16M or 16BL or 16SR.
The rubber eyecup (in v. good condition) has a spring so when you take your eye away from it, two doors inside the eyepiece close, blocking light and preventing you from accidentally flashing your film while rolling.
Diopter adjusts and locks normally.
Cosmetics are ok for the age. Glass is pretty clean - a couple of schmutz marks on the inside of the "rear" element as you can see in one of the pictures. Not visible when looking at an image.
Located in Brooklyn, NY. Thanks for looking.