Cartier Santos Dumont Extra Plate Guilloché Dial 18K Yellow Gold Cartier Service 2026 Ref. 821054

An exceptional Cartier Santos-Dumont Ref. 821054 from the 1980s, crafted in solid 18k yellow gold and featuring an elegant guilloché dial. Recently subjected to an extensive restoration and complete service by Cartier Switzerland in 2026, this example presents beautifully and looks and feels remarkably close to new.

The solid 18k yellow gold case displays the refined, architectural proportions for which the Santos-Dumont is celebrated. Following its professional Cartier refinish, the case presents with beautifully sharp lines and defined edges, giving the watch a wonderfully crisp appearance.

The mesmerizing guilloché dial was newly fitted by Cartier during the 2026 service and is complemented by elegant blued steel hands. A new blue sapphire cabochon crown was also installed, completing the quintessential Cartier aesthetic.

At its heart is the wonderfully slim Cartier Calibre 21 manual-wind movement, allowing the Santos-Dumont to maintain its exceptionally thin and elegant profile.

In 2026, the watch underwent a complete revision at Cartier Switzerland, with the total intervention amounting to more than €2,000. The work included a complete service, professional case polishing, a new dial and a new crown.

The watch is accompanied by its Cartier service paperwork and invoice, together with a 2-year international Cartier service warranty, providing excellent peace of mind to its next owner.

Highlights:

• Reference 821054

• Circa 1980s

• Cartier Santos-Dumont

• Solid 18k yellow gold case

• Sharp lines and beautifully defined edges

• Guilloché Cartier service dial

• Blued steel hands

• New blue sapphire cabochon crown

• Ultra-thin Cartier Cal. 21 manual-wind movement

• Complete Cartier Switzerland service in 2026

• More than €2,000 in Cartier service work

• Complete mechanical revision

• Professionally refinished by Cartier

• New dial fitted by Cartier

• New crown fitted by Cartier

• Cartier service paperwork and invoice

• 2-year international Cartier service warranty

• Presents in exceptional, near-new condition

The Santos-Dumont is one of Cartier’s purest and most elegant watch designs, and this solid-gold 1980s example is particularly compelling. With its ultra-thin mechanical movement, mesmerizing guilloché dial and extensive documented 2026 Cartier Switzerland service, this Ref. 821054 is an elegant and highly collectible Cartier ready to be worn and enjoyed.