Start the Revolution Without Me (1970)

Two sets of identical twins are accidentally switched at birth. One pair, Phillipe and Pierre DeSisi, are aristocratic and haughty, while the other, Charles and Claude Coupé, are poor and dim-witted. On the eve of the French Revolution, both sets find themselves entangled in palace intrigue.

Directed by: Bud Yorkin

Starring: Gene Wilder, Donald Sutherland, Hugh Griffith, Jack MacGowran, Billie Whitelaw, Victor Spinetti

Links: IMDb, Movie posters, Movie stills