Visual Description
The 96053 is the Santos Dumont reduced to its essentials. The rectangular 18k yellow gold case is about 23 mm wide and 32 mm long, and at about 4.1 mm thick it lies almost flat on the wrist. The white dial carries black Roman numerals inside an outer minute track, with the hidden Cartier signature placed in the numeral X. Blued steel sword hands and an angular crown capped with a cabochon complete the watch.
Dials are signed in two ways: Bulang & Sons documents a Paris-signed dial on a mid-1980s example, and Roy & Sacha Davidoff a Swiss-signed dial on one from about 1985. Watches are worn on leather straps with an 18k yellow gold Cartier tang buckle, as on the European Watch Co. and Davidoff examples.
Reference Significance
The 96053 is the small member of Cartier's ultra-thin gold Santos Dumont pair of the 1980s. It shares the white Roman numeral dial and the hand-wound Cal. 21 of the 27 × 36 mm Ref. 96054, scaled down to a case that Bonhams catalogs as a lady's watch. Dealers sell both under the same Extra Plate and Extra Flat names.
The numbering makes the pair easy to separate once you know it. Case numbers run the reference and serial together, so a small watch reads 96053 and then a serial, a large one 96054. The later 8210 family of the 1990s follows the same logic, with 821053 for the small size and 821054 for the large.
Historical Context
Dated examples run through the 1980s. European Watch Co. records papers dated 1984, Roy & Sacha Davidoff dates one to about 1985, Bulang & Sons dates an example with serial 9605312xx to the mid-1980s, and Bonhams catalogs its example circa 1990. Bonhams offered a 96053 in London in June 2025, and another appeared at a French sale on Interencheres in June 2026, cataloged as Reference 96053.
The Cal. 21 inside is the Frédéric Piguet ultra-thin hand-wound movement that Cartier also used in the Tank Louis Extra Plate Ref. 96019 and the larger Santos Dumont 96054. In a case this small it allows the 96053 to stay remarkably thin without giving up a mechanical movement.
What to Look For
Read the case back: the number should begin 96053. A number beginning 96054 is the larger model, and one beginning 8210 belongs to the 1990s family. Open the case or ask for movement photographs to confirm the hand-wound Cal. 21; anything else is not original.
On the dial, check for the hidden signature at X and clean, even printing of the numerals, whether the dial is signed Paris or Swiss. Bonhams' example came with an associated strap and a steel buckle, so confirm that any buckle offered as original is 18k gold and signed Cartier. The thin case shows polishing quickly, softening the edges of the lugs, so look for crisp lines and even brushing on the sides.
