1990s Cartier Santos Dumont Extra Plat Guilloche Dial (Ref. 821054)
- Worth A Read
- Specifications
- Condition
History and Significance
Few watch designs are as historically significant as the Cartier Santos. Originally created in 1904 for the Brazilian aviator Alberto Santos-Dumont, the watch is widely considered one of the earliest purpose-built wristwatches. Louis Cartier designed it so Santos-Dumont could read the time while flying, eliminating the need to reach into a pocket for a watch.
The Santos Dumont Extra Plat represents a more refined interpretation of that original design. While the Santos line eventually evolved into sportier automatic models, the Dumont versions stay closer to the original spirit. They remain thin, manually wound, and focused on elegance rather than sport.
This particular example is especially appealing because of its guilloché dial. The finely engraved pattern radiates outward from the center and catches light beautifully, adding depth to what would otherwise be a very restrained dial layout. Combined with the classic Roman numerals and blued hands, it creates a dial that feels unmistakably Cartier.
Writer’s Thoughts
The Santos Dumont is one of those watches that manages to feel both vintage and modern at once. The square case is instantly recognisable, but in the Extra Plat form it becomes noticeably slimmer and more refined.
The guilloché dial really elevates this example. In direct light, the engraving gives the dial amazing texture, which pairs nicely with the bold Roman numerals. It is the kind of watch that feels elegant without trying at all.
Our Promise
Every watch is thoroughly vetted, carefully described with complete transparency, and guaranteed authentic. Each piece is offered in honest condition, ensuring collectors receive a timepiece that reflects both originality and integrity.
Brand: Cartier
Model: Santos Dumont Extra Plat (Ref. 821054)
Year: circa 1990s
Case: 18k Gold rectangular case with exposed screws
Case Size: 27mm x 36mm
Dial: Silver guilloché dial with Roman numerals and blued hands
Movement: Manual wind mechanical movement
Strap/Bracelet: Leather strap
Buckle/Clasp: Plated Cartier buckle
Contents: Watch only
Case: Case shows light wear consistent with age and use with visible surface marks.
Crystal: Crystal shows no wear.
Dial: Guilloché dial is clean with crisp printing.
Hands: Blued hands are clean and correct for the model.
Strap/Bracelet: The leather strap is new.
Buckle/Clasp: The buckleis clean.
1990s Cartier Santos Dumont Extra Plat Guilloche Dial (Ref. 821054)
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All our watches are carefully inspected to insure and guarantee the authenticity.
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- Worth A Read
- Specifications
- Condition
History and Significance
Few watch designs are as historically significant as the Cartier Santos. Originally created in 1904 for the Brazilian aviator Alberto Santos-Dumont, the watch is widely considered one of the earliest purpose-built wristwatches. Louis Cartier designed it so Santos-Dumont could read the time while flying, eliminating the need to reach into a pocket for a watch.
The Santos Dumont Extra Plat represents a more refined interpretation of that original design. While the Santos line eventually evolved into sportier automatic models, the Dumont versions stay closer to the original spirit. They remain thin, manually wound, and focused on elegance rather than sport.
This particular example is especially appealing because of its guilloché dial. The finely engraved pattern radiates outward from the center and catches light beautifully, adding depth to what would otherwise be a very restrained dial layout. Combined with the classic Roman numerals and blued hands, it creates a dial that feels unmistakably Cartier.
Writer’s Thoughts
The Santos Dumont is one of those watches that manages to feel both vintage and modern at once. The square case is instantly recognisable, but in the Extra Plat form it becomes noticeably slimmer and more refined.
The guilloché dial really elevates this example. In direct light, the engraving gives the dial amazing texture, which pairs nicely with the bold Roman numerals. It is the kind of watch that feels elegant without trying at all.
Our Promise
Every watch is thoroughly vetted, carefully described with complete transparency, and guaranteed authentic. Each piece is offered in honest condition, ensuring collectors receive a timepiece that reflects both originality and integrity.
Brand: Cartier
Model: Santos Dumont Extra Plat (Ref. 821054)
Year: circa 1990s
Case: 18k Gold rectangular case with exposed screws
Case Size: 27mm x 36mm
Dial: Silver guilloché dial with Roman numerals and blued hands
Movement: Manual wind mechanical movement
Strap/Bracelet: Leather strap
Buckle/Clasp: Plated Cartier buckle
Contents: Watch only
Case: Case shows light wear consistent with age and use with visible surface marks.
Crystal: Crystal shows no wear.
Dial: Guilloché dial is clean with crisp printing.
Hands: Blued hands are clean and correct for the model.
Strap/Bracelet: The leather strap is new.
Buckle/Clasp: The buckleis clean.