This is a digital scan of a photograph that was created and published in the United States before 1977 and offered for public sale without a copyright notice and without information of whom the original photographer was - Verified by checking both sides of the photograph.
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.