Short answer
A "fake Cartier Baignoire 2515" is a counterfeit watch built to look like a Cartier Baignoire with the caseback reference 2515. The real watch is an elongated oval case with Roman numerals, a quartz movement, and a blue cabochon set in the winding crown. Replicas copy the outline and the 2515 stamp. They are counterfeit goods. Trafficking in them in the United States is a federal offense.
The genuine Baignoire 2515
Cartier began making the curved oval case in 1912. The Baignoire name came in 1973. The 2515 is a reference code stamped on the caseback. Cartier does not publish a public reference archive, so the same number appears on Baignoire variants from different production years. Treat 2515 as a family code, not a single fixed specification.
- Case: oval and elongated, about 22 mm wide and 30 mm long in the common small size.
- Case metal: stainless steel or 18k yellow gold, depending on the version.
- Dial: silver or white, Roman numerals, blued steel hands.
- Movement: quartz on most 2515 variants. Some Baignoire models use a manual-wind mechanical caliber.
- Crown: fluted, set with a blue cabochon.
- Strap: leather, cut to the lug width.
Case sizes, dial colors, and movements change across the production run. A caseback number alone does not confirm a specification. A Cartier service record tied to a serial number is the stronger document.
Where replicas differ
- Cabochon. Cartier uses sapphire. Replicas use glass or dyed spinel. The color reads flat and the dome sits low.
- Dial print. Cartier Roman numerals hold even stroke width. Replica numerals run heavy at the base and thin at the top. The brand signature sits off-center on many fakes.
- Caseback engraving. Real stamps are cut deep with crisp edges. Replica stamps are shallow, laser-etched, and uneven in letter spacing.
- Movement. Most Baignoire 2515 watches run a Swiss quartz caliber. Replicas use Chinese quartz or a low-grade mechanical module. The battery hatch shape differs.
- Weight and finish. Replica gold is plating over brass or steel. Polished edges around the lugs are uneven.
- Strap hardware. Replica buckles are stamped, not cast.
US legal status
US law treats counterfeit watches as counterfeit goods. 18 U.S.C. § 2320 covers trafficking in counterfeit goods and services. A first offense carries up to 10 years in prison and a fine. The Lanham Act gives trademark owners a civil claim. US Customs and Border Protection seizes counterfeit shipments at ports and destroys them. A buyer who imports a counterfeit watch can lose both the item and the money paid.
Price and service
Genuine pre-owned Baignoire 2515 watches sell on the secondary market for about 2,000 to 8,000 US dollars, with gold versions at the top of that range. Replicas sell for tens of dollars to a few hundred. Cartier does not service counterfeits and does not supply parts for them. Independent watchmakers decline this work in many cases because the movement is not a Cartier caliber.
What the number does not tell you
A 2515 stamp does not prove a watch is genuine. Its absence does not prove the opposite on older pieces. The reliable checks are caseback engraving depth, cabochon material, movement type, and a Cartier service record.