• The complete ad is shown as the initial upload and there are no copyright marks on it.
• "You are buying/bidding on a RARE, ORIGINAL FRACTIONAL AD from an entertainment business paper/magazine dated September, 1965 featuring legendary TV producer AARON SPELLING promoting TWA Ambassador Service."-seller's eBay copy
• TWA issued the ad without any copyright marks or notations.
• US Copyright Office page 3-magazines are collective works (PDF)

"A notice for the collective work will not serve as the notice for advertisements inserted on behalf of persons other than the copyright owner of the collective work. These advertisements should each bear a separate notice in the name of the copyright owner of the advertisement."

• Any copyright for the magazine/business paper would not affect this non-marked TWA ad. TWA didn't label their ad as under copyright.

This advertisement (or image from an advertisement) is in the public domain because it was published in a collective work (such as a periodical issue) in the United States between 1929 and 1977 and without a copyright notice specific to the advertisement. Unless its author has been dead for several years, it is copyrighted in jurisdictions that do not apply the rule of the shorter term for US works, 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. See this page for further explanation.