The Unknown Quantity is a lost 1919 American silent directed by Thomas R. Mills produced and distributed by the Vitagraph Company of America. It is based on the 1910 short story of the same name by O. Henry.

The Unknown Quantity (1919)
Directed by Thomas R. Mills
Genres - Drama, Silent Film |
Sub-Genres - Silent Feature, Silent Film, Silent Short |
Release Date - Apr 14, 1919 |
Run Time - 50 min. |
Description by Wikipedia
Movie Info
Tags
Tale
Alternate Titles
The Unknown Quantity
US