Has a NOS glass crystal. Locomotive rendering looks brand new. Very nice looking case. Very good protection for your movement and a beautiful engraving. Use the photos as part of the description. Please contact me with any questions. The Crown can also be pulled up to accommodate Pendant Set movements. You know, I think that rear cover was engraved in part by man and in part by machine. Case: Open Face, both covers screw on/off. Maker: Bates and Bacon W. C. Co. Outside D: 52 mm. Please use the photos as a big part of the description and please contact me with any questions.