The 1942 original is widely considered to be in the public domain in the United States because its copyright was not renewed after the initial 28-year term. This means you can find it for "free download" on various archival and legal public domain sites.
Directed by Ernst Lubitsch, this film is a dark comedy set in Nazi-occupied Warsaw. It stars Jack Benny and Carole Lombard as a husband-and-wife acting team who use their theatrical skills to dupe the Nazis and assist the Polish resistance.
The title most famously refers to the classic 1942 wartime comedy directed by Ernst Lubitsch, as well as its 1983 remake starring Mel Brooks. The Original Masterpiece (1942)
In 1996, it was selected for preservation in the National Film Registry for being "culturally, historically, or aesthetically significant". The 1983 Remake