The Keys to Happiness
Directed by Vladimir Gardin and Yakov Protazanov, this two-part epic was the most expensive Russian film at the time and smashed box office records. It is now considered lost, with only a 4 minute clip surviving.

2006

2003

2004

2014

1989

2022

1921

1987

1915

2017

1980

1969

1967

1929

2019

1920

1917

2002

1994

2005