Short answer
A replica Cartier Santos two tone copies the Santos de Cartier in steel and gold. Genuine two tone Santos watches pair 18k yellow gold or 18k rose gold with steel. Most replicas use steel plus gold plating. Plating thickness runs from 0.5 microns to 5 microns across sellers. A small number of high priced replicas use a solid gold bezel. That build costs several times a plated one and shows up in the weight of the watch.
Case sizes to compare
Cartier lists two main sizes for the Santos de Cartier. Compare any listing against these numbers.
- Large: 39.8 mm wide, 47.5 mm lug to lug, 9.38 mm thick.
- Medium: 35.1 mm wide, 41.9 mm lug to lug, 8.83 mm thick.
- Santos-Dumont models use different cases. Do not mix those specs with Santos de Cartier specs.
Sellers who list no millimeter figures are selling an unknown case. Ask for a caliper photo next to a ruler.
Movement
Genuine steel and gold Santos de Cartier watches use the Cartier 1847 MC automatic. It runs at 28,800 vibrations per hour with about 42 hours of power reserve. Replicas use one of three common movements: a Miyota 9015, a Seagull ST2130, or a Chinese copy of the ETA 2824-2. All three beat at 28,800 vph and hack. Cheap builds use a 21,600 vph movement. A stuttering seconds hand at that beat rate is a visible tell.
Materials and finish
- Plating. Ask for a number in microns. Below 1 micron, gold wear shows in a few months of daily use.
- Hallmarks. Genuine gold parts carry hallmarks. Plated replicas often carry none.
- Bracelet. Santos bracelets use screws, not friction pins. Genuine bracelets add SmartLink and QuickSwitch fittings.
- Water resistance. Many replicas carry a 3 ATM label or no rating. Do not swim with one.
- Dial printing. Genuine dial text is pad printed with sharp edges. Soft or thick lettering is a common flaw.
Grade words sellers use
Terms such as AAA, 1:1, mirror, and super clone have no agreed definition. Two sellers can apply different labels to the same watch. Ignore the label and ask four questions: case diameter in millimeters, movement model number, plating thickness in microns, and caseback engraving depth.
Legal status in the US
Counterfeit watches infringe Cartier trademarks. Trafficking in counterfeit goods carries up to 10 years in prison for a first offense under 18 U.S.C. 2320. Civil claims under the Lanham Act allow statutory damages per counterfeit mark. US Customs and Border Protection can seize counterfeit shipments, including single item personal imports. Ordering from an overseas site does not remove that risk.
Checks before payment
- Confirm case size in millimeters.
- Confirm the movement model number.
- Confirm plating thickness.
- Confirm the return window and refund terms in writing.
- Confirm the payment method allows a chargeback.