Robert Downey Jr. wears an unidentified watch

In the black-and-white half of Oppenheimer, the half shot from Lewis Strauss's point of view, Strauss sits at the witness table of his 1959 Senate confirmation hearing with his hands clasped in front of him. On his left wrist, past the cuff, is a chronograph. Two subdials, a light dial, a steel case on a woven metal bracelet. What you cannot make out is a name.

This is a strange gap, because Oppenheimer is a film that had its watches sorted out in advance. Hamilton supplied vintage pieces for the production and then said so in public, naming the three men whose wrists they ended up on: Oppenheimer, his wife Kitty, and General Leslie Groves. Hodinkee wrote up the same three. Nobody, not the brand and not the watch press, accounted for the chronograph on Strauss.

What guesses there are come from a watch-spotting site and a Reddit thread. The site lists a vintage Breitling Premier. The thread floats a Gallet MultiChron 45 before the person who started it admits he cannot pin it down. Both are bicompax chronographs, which at least matches the two subdials on the dial, and neither has a logo to point to or anything behind it but a freeze-frame. So the watch stays what it looks like: a 1950s chronograph on the wrist of the man Robert Downey Jr. won an Oscar for playing, brand unknown.