The term fake Ballon Bleu 33708 refers to counterfeit or replica versions of a Cartier Ballon Bleu de Cartier whose caseback carries the number 33708. That number is a case reference, not a full Cartier model number, so a watch described as a 33708 can be a genuine mid-size Ballon Bleu, a rebuilt watch using mixed parts, or a replica built around a copied case stamp. Knowing which identifier you are looking at is the first step in judging what is actually being sold.

What the 33708 Reference Identifies

Cartier identifies its watches with two separate systems. The catalog model number, such as W69012Z4, appears on paperwork and in official product listings. The case reference is a shorter numeric stamp engraved inside the caseback and identifies the case architecture and size family. The 33708 stamp is associated with mid-size Ballon Bleu automatics, the roughly 36 mm steel versions with the fluted crown guard and the blue cabochon set into the crown.

Because the case reference says nothing about dial color, bracelet type, or movement, sellers who quote only 33708 are leaving out the details that determine value. Two watches with the same caseback stamp can differ by thousands of dollars depending on configuration and condition.

Why This Reference Is a Common Target for Fakes

The steel mid-size automatic is the volume model of the Ballon Bleu line, which makes it the most profitable shape to copy. Its case is a simple rounded form to reproduce, and the solid caseback hides the movement completely. A closed back removes the single hardest part of a replica to get right, since there is no sapphire display window exposing rotor finishing, bridges, or perlage.

How to Tell a Real Ballon Bleu From a Fake

Authenticity checks on this model come down to small details that survive magnification and handling:

  • Crown cabochon. The genuine stone is a blue synthetic spinel set flush in the crown. Replicas use glass or dyed resin that sits proud, looks cloudy, or shifts color under indoor light.
  • Crown guard fluting. The ridges on the guard should be crisp and evenly spaced. On fakes they are often shallow and rounded.
  • Dial texture. The concentric guilloché pattern is cut into a genuine dial and catches light in rings. Cheap replicas print the pattern, so it looks flat from an angle.
  • Printing and numerals. Roman numerals, the CARTIER signature, and the minute track should be sharp with even spacing, including under a loupe.
  • Caseback engraving. Genuine stamps are deep and aligned, with consistent spacing between reference and serial. Replicas show light, shallow etching with uneven gaps.
  • Crystal. Sapphire with anti-reflective treatment stays clear. Mineral glass on fakes scratches and throws a purple or green cast at an angle.
  • Weight and bracelet. Link fit, screw heads, clasp stamping, and the sound the bracelet makes when handled all separate a genuine build from a copy.
  • Movement. Since the caseback is solid, a watchmaker needs to open the watch to confirm the calibre and its finishing.

What Even High-End Replicas Miss

Well-made fakes can match exterior dimensions closely enough to fool a phone photo. Differences appear in engraving depth, the finishing of surfaces hidden between the lugs, bracelet tolerances, gasket quality, and movement decoration. These are the areas where cost is cut, and they are the areas a jeweler or watchmaker checks first.

Legal and Practical Risks

In the United States, trafficking in counterfeit goods is illegal, and imported fakes are subject to seizure. Buyers of a fake Ballon Bleu 33708 also lose practical protections: no manufacturer warranty, no authorized service, no parts availability, and little or no resale value. Many independent watchmakers decline to service counterfeit watches because parts cannot be sourced.

What to Check Before You Buy

  1. Ask which catalog model number the seller claims and confirm it matches the case reference.
  2. Request a straight-on photo of the caseback engraving, including the serial.
  3. Ask whether a movement photo or service record exists.
  4. Confirm a return window and whether a third-party watchmaker can inspect the watch.
  5. Compare the asking price against current market pricing for a genuine mid-size Ballon Bleu.

Bottom Line

A listing for a fake Ballon Bleu 33708 usually reveals itself through the details a seller avoids showing: the caseback stamp, the crown stone, and the dial texture up close. Treat 33708 as a case reference only, verify the full model number, and have any serious purchase opened and inspected before money changes hands.