A Girl in Every Port (1952)
After two sailors are conned into buying a lame race-horse, they go ashore to sort out the problem, but when they realize that the horse is one of a pair of identical twins, their plan for revenge becomes more complicated.
Directed by: Chester Erskine
Starring: Groucho Marx, Marie Wilson, William Bendix, Don DeFore, Gene Lockhart, Dee Hartford
Links: RKO Radio Pictures, IMDb, Movie posters, Movie stills