The third Seiko, a steel and gold-plated Reference 6923-8080 SPD09, is not visible at all. It was confirmed by Seiko UK as one of the watches worn in the movie, and only just shows its crown and case flank when James Bond enters his nemesis’s chateau.
When Bond finds his co-conspirator Sir Godfrey Tibbett, played by Patrick Macnee, in the backseat of a Rolls-Royce, he checks for a pulse. This action gives us a very clear shot of what is beyond the shadow of a doubt a Rolex Datejust.
This timepiece was not officially cast in the movie and shouldn’t even have been in the shot as it was Moore’s personal watch. The watch that he should have been wearing in this scene was the steel and gold-plated Reference 6923-8080 SPD09.
I guess the Bond-Seiko relationship had cooled down quite a bit at that point. Too bad we can't ask Sir Roger any Moore... ( )
I guess that's if you believe the article. I know Seiko were official suppliers but having recently watched the movie, at the chateau Bond is definitely wearing the 2 tone datejust in every scene. Patrick Macnee wore a 2 tone quartz Seiko. It is visible in several scenes.
I suspect that Roger Moore filmed those scenes last and had already handed back the borrowed watches to Seiko and was wearing his own watch. The later films are not shot in sequence. They film the nost difficult scenes first, including stunts.