The Unknown Quantity
- Odun: 1919
- Orilẹ-ede: United States of America
- Oriṣi: Drama
- Situdio: Vitagraph Company of America
- Koko-ọrọ: lost film
- Oludari: Thomas R. Mills
- Simẹnti: Corinne Griffith, Huntley Gordon, Harry Davenport, Jack McLean, Jack Ridgeway, F.R. Buckley
