Look at the object.
Keep its context.

A Les Must de Cartier Tank photographed by Guy Sie. This family example is not a 1917 original or a Tank Louis Cartier. Notice the vertical case sides, Roman numerals and strap continuity. Production date, exact reference and metal fineness are not established by this photograph.

A two-tone Patek Philippe Nautilus; the photographer identifies this example as quartz. This later variant is distinct from the original 1976 mechanical Nautilus. Notice the continuous case-and-bracelet outline. The movement type is attributed to the photographer, rather than authenticated from this still image.

Rolex Submariner-Date, identified on the source page as reference 16610. Compare the bezel scale and the date aperture as different kinds of information. This later family example does not establish specifications for the 1953 launch watch.

An Omega Speedmaster Automatic with a date window, photographed by Hobo. This image illustrates a different Speedmaster variant from the hand-wound Moonwatch discussed in the history. Compare the three subdials with the separate date window. The exact reference and movement calibre remain unverified; this is a variant comparison, not a NASA or Apollo illustration.

A blue-dial Audemars Piguet Royal Oak on the wrist, identified on the source page as reference 15202. This later example is distinct from the original 1972 reference 5402. Look at the case-to-bracelet transition and the screw-set bezel. The exact reference identification follows the source description rather than independent authentication.

A two-tone Patek Philippe Nautilus; the photographer identifies this example as quartz. This later variant is distinct from the original 1976 mechanical Nautilus. Notice the continuous case-and-bracelet outline. The movement type is attributed to the photographer, rather than authenticated from this still image.