Cartier Santos 100 XL — Reference W200737G | Stainless Steel Automatic | Silver Roman Dial | Watch Only

The Cartier Santos 100 XL (Ref. W200737G) is the definitive expression of one of watchmaking’s most storied designs. Born from Louis Cartier’s 1904 commission for Brazilian aviator Alberto Santos-Dumont — widely considered the first purpose-built wristwatch for a man — the Santos 100 XL elevates that original vision into a bold, modern luxury sports watch. This all-stainless steel example is offered in excellent pre-owned condition, timegrapher tested, and ready to wear.

Movement & Accuracy

At the heart of this Santos 100 XL beats the Cartier Caliber 049, an automatic self-winding movement derived from the highly regarded ETA 2892-A2 base, elevated with Cartier’s in-house finishing including Côtes de Genève striping, perlage on the plate, and thermally blued screws. This watch was tested on a Function Time Grapher No. 1000 and recorded exceptional results:

• Rate: 0 seconds/day
• Amplitude: 240°
• Beat Error: 0.4 ms
• Lift Angle: 52°

These figures confirm the movement is performing at its peak.

Case & Dial

The 38mm x 51mm stainless steel case combines brushed and polished surfaces for a sophisticated contrast, anchored by the iconic fixed bezel with 8 exposed screws — the architectural detail that makes the Santos unmistakable. The silver dial features oversized bold black Roman numeral hour markers and elegant sword-shaped blued steel hands, framed by a minute-track chapter ring. The signature octagonal crown is set with a blue sapphire cabochon, a hallmark of Cartier craftsmanship. A scratch-resistant sapphire crystal protects the dial.

Bracelet & Clasp

The Santos 100 XL rides on its matching integrated stainless steel bracelet with the iconic screw-motif links that echo the bezel’s industrial-chic aesthetic. The clasp is a fold-over deployant style, stamped with “Cartier / Swiss Made / Stainless Steel” — a mark of authenticity visible in our detailed photos.