By Candlelight (1933)

Josef is valet for Count von Rommer and well-trained in his master's philandering ways. Mistaken for the Count by Marie, a maid he thinks is an aristocrat, Josef shows her a merry time at the Count's Monte Carlo villa. Meanwhile, the Count escapes a situation with Countess von Rischenheim when her count husband makes an unscheduled appearance, by posing as the butler.