From the desk · October 30, 2026
The Santos goes full dark with ADLC-coated steel, a black Roman dial, and rubber strap — unworn, complete with box and papers.
Most people picture a Santos with a silver case and a white or cream dial. This one goes the other way — all the way. The ADLC coating wraps the 39.8mm steel case in a deep, matte black that absorbs light rather than throwing it back at you. Pair that with a black Roman-numeral dial and a rubber strap, and you have a Santos that looks as right on a race circuit as it does at a rooftop dinner. It is not subtle, and that is the whole point.
The Santos has been turning heads since 1904, when Louis Cartier designed it for his friend Alberto Santos-Dumont — one of the first wristwatches made specifically for a man. That backstory gives every Santos a romance that most sport watches simply do not have. This version keeps all the signature details in place: the square case softened at the corners, the exposed screws running along the bezel, the clean Roman-numeral chapter ring. Then it dresses the whole thing in black.
ADLC — Amorphous Diamond-Like Carbon — is a serious surface treatment, harder and more durable than standard PVD coatings and considerably more resistant to the everyday rubs and scratches of a life actually lived in. The finish has a quiet, almost velvety depth that photographs do not fully capture. It does not shout. It just reads as something very deliberate.
At 39.8mm, the case is substantial enough to wear with real presence and compact enough to slip under a dress shirt cuff without a fight. The rubber strap keeps the whole package feeling dynamic without pushing it into casual territory. This is still, unmistakably, Cartier.
The all-black Santos — reference WSSA0039 — is a configuration that caught collector attention quickly. Most Santos references on the secondary market present in polished steel with lighter dials; this version, in full ADLC with a matching black dial, has a look that stands clearly apart.
The modern Santos was relaunched in its current form in 2018 with a QuickSwitch interchangeable strap system built directly into the case — no tools required, done in seconds. That means a matching steel bracelet, if you wanted one later, would transform the watch entirely without any fuss. It is a thoughtful design choice that has quietly strengthened the current generation's long-term appeal.
At $9,725, this is an unworn, fully documented 2026 piece with everything a Santos buyer wants to see: original box, original papers, and a dial-and-case combination that takes some looking to find in this condition.
This Santos is unworn and comes with the original Cartier box and papers, dated 2026. At My Watch Dealer, every watch goes through our own bench check before it ships. Along with the watch you receive a two-year store warranty covering the movement, a MyLuxApp-certified written appraisal, and a presentation box from us. Returns are accepted within seven days of delivery on unworn in-stock pieces. Shipping is fully insured overnight with signature required.
We are in the downtown Los Angeles jewelry district — 650 S. Hill St., Suite 317 — and welcome visits by appointment Monday through Friday, 10am to 6pm Pacific. You can reach us at (213) 373-4424.
The WSSA0039 is the kind of watch that only reveals itself fully on the wrist — the ADLC finish reads differently in every light, and no photograph quite does it justice.
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