English: Postcard for Stardust Hotel, Las Vegas, Nevada. This unused postcard does not have a copyright claim. Based on the elements in the photograph, the photograph was taken after 1965 (when the starry cloud roadside sign was erected) and 1968 (when the facade sign was changed to the earth on a pylon) but before 1977 (when the starburst neon background of the facade sign was removed).
Date
Source
Postcard for Stardust Hotel, Las Vegas, Nevada, dated to the late 1960s or early 1970s.
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.