From the hit film Batman, 1989 this is a Real Prop Bat Disc. This Prop Disc and ones like it were shot out of the Batmobile in the film. The Prop Bat Disc is made out of a plastic type of material. It is hollow and Black in color. There is a Bat emblem embossed into the surface of the disc and it does have a hole which was drilled through it so it could be attached to the shooting mechanism that shot the discs out of the Batmobile in the 1989 film.
The Disc measures 8 inches ( 20.32 centimeters) in diameter and is 1 inches (2.54 centimeters) thick. It was originally obtained from a Universal Studios Charity Auction and comes complete with Letter of Authenticity.