Short answer
A fake Roadster 3040 is a replica of the Cartier Roadster sold under an internal seller code. The number 3040 does not come from Cartier. Cartier reference numbers for that model line start with a W and end in a letter and digit suffix, so 3040 works as a catalog label that one vendor uses to mark case size, movement type, and dial color as a single package. The same number can describe a different watch on a different storefront, which is why the listing photos matter more than the code.
Before you start
- Pull up the genuine Roadster specifications for the size you are comparing against so you have real numbers to check.
- Ask the seller for daylight photos of the dial, caseback, crown, and clasp, not studio renders.
- Confirm the return window and whether returns cover a watch opened by a repair shop.
- Set a budget ceiling. Price tells you which movement tier you are likely getting.
How to inspect a Roadster 3040 step by step
- Ask the seller for the case diameter and thickness in millimeters, then compare both numbers against the genuine figure you looked up.
- Zoom into the dial print and check the letter spacing and stroke weight on the brand name and the numerals.
- Count the screws on the bezel and look at the slot alignment and depth on each one.
- Inspect the date aperture for a square cut, centered numerals, and a font that matches the rest of the dial.
- Turn the crown through a full wind and confirm it seats flush inside the crown guard without wobble.
- Read the caseback engraving under a loupe and check spelling, depth, and whether the text is laser-crisp or stamped shallow.
- Weigh the watch head on a kitchen scale and note the number, since plated brass cases run light against stainless steel.
- Work the clasp or deployant through ten open and close cycles and listen for grit or a loose latch.
- Hand the watch to a watchmaker and have the caseback opened so the movement maker and jewel count can be identified.
Movement, water resistance, and wear
Most Roadster 3040 listings fall into two groups: quartz builds and automatic builds using a generic or cloned movement. Quartz versions keep better time out of the box and cost less to service. Automatic versions feel heavier on the wrist and have a sweeping seconds hand, but service costs can approach the price of the watch.
Treat water resistance as unknown unless the seller supplies a pressure test result. ISO 22810 defines how water resistance is rated and tested, and that rating only applies to a watch that was actually tested. A screw-down caseback and new gaskets help, but they are not a substitute for a test. Keep any replica away from pools, showers, and salt water.
Legal note
Counterfeit trademarked goods are illegal to import into the United States. U.S. Customs and Border Protection can seize and destroy shipments, and the FTC warns that counterfeit items sold online are often lower in quality than the listing claims. Sellers who ship into the U.S. carry the same exposure. If a listing promises genuine parts at a fraction of retail, that claim is false.
Quick checklist
- Case dimensions match the genuine size you looked up.
- Dial print is sharp at 2x zoom.
- Bezel screws are evenly set.
- Movement identified by a watchmaker.
- Return policy in writing before payment.