English: Scene from the Star Trek episode "Spock's Brain". From left-Marj Dusay (Kara), Leonard Nimoy (Spock) and William Shatner (Kirk). In this scene, Kirk commands Spock to grab Kara's wrist and deactivate her bracelet; she's the one who stole Spock's brain. This makes Kara powerless.
Pre-1978, no mark. Note there is a collectors' or photographers' mark on the bottom of the photo's back. Close examination shows it is not a copyright mark.
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.