The number 33702 is a Cartier case reference, not a model name. It is stamped inside the caseback of Ballon Bleu de Cartier automatic watches, most often the 36 mm steel version. A fake Ballon Bleu 33702 is a counterfeit watch built to look like that reference. The number itself is genuine. Sellers of replicas reuse it in listings because buyers search for it.
What reference 33702 covers
Cartier uses two numbering systems. Retail catalog numbers start with the letter W. Case references are four or five digits and sit inside the caseback next to the serial number. Reference 33702 points to a Ballon Bleu automatic with a steel case, a smooth bezel, and a silvered guilloche dial. Cartier lists the diameter at 36.6 mm and the thickness near 12 mm.
- Case: polished stainless steel, 36.6 mm across
- Crystal: sapphire with anti-reflective coating
- Crown: fluted steel with a blue synthetic spinel cabochon, set inside a curved crown guard
- Dial: guilloche silver, printed Roman numerals, the Cartier name in place of the VII numeral, date aperture at 3
- Hands: blued steel, sword shape
- Movement: Cartier calibre 076, based on the ETA 2892-A2, 25 jewels, 28,800 vph, about 42 hours of power reserve
- Water resistance: 30 m
Checks that separate a real case from a fake
- Cabochon. Genuine stones are synthetic blue spinel, cut with a dome, set flush in the crown. Glass or plastic imitations show bubbles under 10x magnification.
- Crown guard. The steel guard flows into the case as one piece. Copies show a seam or a gap at the joint.
- Dial print. Roman numerals on the real dial have crisp edges. Replica print looks soft at the same magnification.
- Hands. The sword hands are flat, blued, and sit level over the dial. Copies ride high or show uneven color.
- Caseback. The 33702 stamp and the serial number are engraved into the metal. Laser-printed or shallow numbers are a warning sign.
- Movement. Check the beat rate and the rotor engraving. A 21,600 vph rate does not match calibre 076.
Price and legal facts
Used steel 36 mm Ballon Bleu automatics trade in the low thousands of dollars on the secondary market. Replica listings ask a few hundred. That gap drives the counterfeit trade, and it creates the legal problem.
In the United States, trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320, with prison terms up to 10 years for a first offense. U.S. Customs and Border Protection seizes counterfeit watches at ports of entry, including single pieces shipped for personal use. A purchase does not create a legal right to the trademark.
Limits of a visual check
Some replicas use genuine ETA or Sellita movements, so a case that is opened shows the truth faster than any dial comparison. Cartier does not publish a public reference database. A watchmaker can verify the movement, the crystal material, and the case metal, and serial numbers can be checked with the brand. Listing photos are not enough. If a seller cannot show the movement, the answer is no.