Brass Knuckles

Brass Knuckles is a surviving 1927 American synchronized sound crime film directed by Lloyd Bacon and starring Monte Blue, Betty Bronson, and William Russell. While the film has no audible dialog, it was released with a synchronized musical score with sound effects using the Vitaphone sound-on-disc process. The film was produced and distributed by Warner Bros. Pictures.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.