Short answer
The string "Cartier Santos 162367" does not match a Cartier reference. Modern Santos models carry prefixes like WSSA and W2SA, and vintage Galbée and Santos 100 pieces use four-digit numbers. A six-digit code such as 162367 shows up mostly in marketplace titles and on the casebacks of replica batches, where one stamp gets recycled across hundreds of watches. Treat the number itself as the first red flag.
Why that number is everywhere
Replica sellers reuse caseback stamps. Once a batch gets a code, it becomes shorthand in listing titles, group chats, and forum threads, and buyers searching that exact string keep landing on the same listings. That loop makes a made-up number feel official.
It helps to know the real numbering for a minute. Cartier's current Santos line uses WSSA (steel), W2SA (steel and gold), and WHSA (gold) prefixes. Earlier Santos Galbée and Santos 100 watches carry four-digit references and longer internal codes. If the caseback code on a watch for sale does not line up with a Cartier service record, that matters more than any story in the listing.
Cartier Santos Buying Guide: Reference 162367 and How to Avoid a Counterfeit
How to inspect the watch in front of you
The screws
The Santos is defined by visible screw heads on the bezel and the bracelet. On real pieces the slots are crisp, evenly cut, and sit flush with the surface. Copies usually stamp them, so the edges look soft and the heads sit slightly proud or off-center. Drag a fingernail across the row. Genuine screws catch; fakes glide.
Dial printing
Cartier prints tiny and clean. Put a phone camera on 3x zoom and read the CARTIER wordmark and the Roman numerals. Copies thicken the strokes and drift on spacing, especially around VII and VIII. The secret signature inside the VII, on models that have one, is either missing or so obvious that it defeats the point.
Caseback engraving
Real engraving cuts deep and holds the same depth around the curve. Replica casebacks are laser etched: grey, shallow, flat under angled light. Serial numbers repeat across listings too, so search the number and see how many other watches share it.
Movement and crystal
The current Santos runs an in-house automatic. Copies run quartz or a generic third-party automatic. A quartz movement behind a Santos dial is not a Cartier, no matter what the box says. Check the crystal as well: sapphire stays clear at an angle, mineral goes hazy, and copied sapphire claims do not hold up to a scratch test.
Weight and finishing
Hold it. Steel Santos models have a density copies do not match, because the bracelets are hollow in places you cannot see. Run a finger along the bracelet edges. Real ones are chamfered and smooth. Copies leave a burr.
What you are actually buying (US)
Counterfeit watches are illegal to import and sell in the United States. Customs can seize a package, and the buyer has no recourse with the seller. Selling is a bigger problem. Trafficking in counterfeit goods is a federal offense, and resale platforms and payment processors act on it fast.
Then there is service. Cartier will not touch a fake. Independent watchmakers often decline too, since parts do not exist and the movement is unidentified. A watch that cannot be repaired or regulated is not a bargain at any price.
Better ways to get the look
If the Santos shape is what you want, buy the shape for real. A vintage steel Santos Galbée is a genuine Cartier, holds value, and can be serviced. Homage watches from microbrands deliver the square case and exposed screws without pretending to be something else. Neither will fool someone who knows watches. Both will still be running in five years.
Bottom line
Searching "fake Cartier Santos 162367" means you found a listing with a code that does not exist in Cartier's catalog. That is the tell. From there, check screws, dial print, caseback depth, movement type, and weight, and remember that in the US a counterfeit purchase can be seized at the border and can never be serviced.