SIGMA High Speed MC 80-200mm zoom f 3.5-4 macro zoom MF lens for Olympus OM S/N 576513. You can use it with Olympus OM mount SLR film cameras. Also in Autofocus and Digital slr with adapter in manual mode.
Olympus OM fit. Not E series. The lens won’t mount on a camera, looks like one of the small black switches is broken. Classic manual focus lens. Made in Japan. Does have some blemishes to the front of the lens.