The item has no copyright markings on it as can be seen in the links above. At lower left is the name of the company in Fort Lee, NJ who printed the card; at lower right is Country of Origin USA.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
{{Information |Description=Lobby card for the 1931 film ''Virtuous Husband''. |Source=[http://www.ebay.com/itm/VIRTUOUS-HUSBANDS-ORIG-USA-11x14-LC-1931-Jean-Arthur-/311105293001?pt=LH_DefaultDomain_0&hash=item486f520ac9&nma=true&si=aIxURsePxKWAvbrXznJB...