A fake Ballon Bleu Extra Large is a counterfeit copy of the Cartier Ballon Bleu de Cartier 42 mm, the largest standard case size in the line. Genuine examples use a blue synthetic spinel cabochon, a textured guilloché dial, and a finished Swiss automatic movement, while replicas usually cut corners on the cabochon, the dial pattern, the caseback engraving, and the movement itself. Because the 42 mm Extra Large is one of the most requested Cartier shapes, it is also one of the most heavily counterfeited.
What is the Ballon Bleu Extra Large?
The Ballon Bleu de Cartier launched in 2007 and takes its name from the balloon-like curve of the case. The Extra Large version measures roughly 42 mm wide and about 13 mm thick, which makes it noticeably larger than the 33 mm and 36 mm models. It is sold in steel, rose gold, yellow gold, and two-tone versions, in both time-only and chronograph variants.
- Case: rounded 42 mm profile with a crown guard that flows into the case flank
- Crown: fluted crown capped with a blue synthetic spinel cabochon
- Dial: silvered dial with guilloché texture, Roman numerals, and blued sword-shaped hands
- Crystal: sapphire, with a sapphire or solid caseback depending on reference
- Movement: Cartier calibre 049 automatic in the steel time-only model
How do you tell a fake Ballon Bleu Extra Large from a genuine one?
Counterfeiters copy the silhouette well and the small details poorly. The fastest check is the crown cabochon, then the dial surface, then the caseback.
Cabochon and crown
Genuine Cartier steel models use a synthetic blue spinel cabochon set into a fluted crown. Replicas often use resin, plastic, or colored glass that looks flat, cloudy, or too purple in daylight. The cabochon should sit centered and flush, with the crown guard curving smoothly into the case.
Dial texture and printing
The genuine dial has a fine concentric or sunray guilloché finish that shifts under light, while replica dials often use printed lines or a shallow stamped pattern. Roman numerals should be crisp and evenly spaced, and the hands should be blued steel rather than painted blue. On many references a tiny Cartier signature is worked into the VII numeral, and replicas rarely reproduce it cleanly.
Caseback, engravings, and serials
Genuine casebacks carry the reference number, serial number, model name, and Swiss Made marking in sharp, shallow engraving. Replica engraving tends to be deeper, softer, or misaligned, and the serial may not match any Cartier record. On display-back versions, the movement should show Geneva stripes, blued screws, and engraved Cartier branding.
Weight, bracelet, and finish
Steel Cartier cases feel dense and cold, and bracelet links articulate without rattle. Replicas frequently use lighter alloys, hollow end links, or clasps that flex and buzz. Polished and brushed surfaces on a genuine watch meet in crisp lines rather than blurring together.
What do Swiss replica grades mean?
Sellers use labels such as AAA, 1:1, Swiss ETA, and Swiss made clone to suggest quality tiers. These labels are marketing terms rather than industry standards, and the same factory language is reused across unrelated watches. A replica described as Swiss ETA may contain a generic Asian automatic, a quartz movement, or a decorated movement with no Swiss parts.
Are fake Ballon Bleu watches legal in the United States?
No. Trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320, and importing counterfeit merchandise is prohibited by 19 U.S.C. 1526. U.S. Customs and Border Protection routinely seizes counterfeit watches, and buyers can lose both the item and the money paid for it.
Why does the 42 mm size get faked so often?
The Extra Large sits in a popular price bracket behind a recognizable silhouette, which makes it attractive to counterfeiters. The larger dial also magnifies flaws, so the gap between genuine and fake is easier to see at 42 mm than at 33 mm. That size advantage is useful when inspecting a watch in person.
Frequently asked questions
Does the Ballon Bleu Extra Large have a real sapphire cabochon?
Cartier uses a synthetic blue spinel for the crown cabochon on steel and most gold references, not a natural sapphire. The stone is a signature design element rather than a gemstone investment.
What movement is inside the 42 mm Ballon Bleu?
The steel time-only Extra Large runs the Cartier calibre 049, an automatic movement based on the ETA 2892-A2. Chronograph versions use a different Cartier automatic calibre with a modular chronograph.
Can a jeweler authenticate a Ballon Bleu?
Yes. An authorized Cartier dealer or a qualified watchmaker can open the case, check the movement, and verify the serial number. A service estimate from Cartier is the most reliable confirmation of authenticity.