A fake Ballon Bleu medium is a replica of the Cartier Ballon Bleu de Cartier 36 mm, the size Cartier sells as the medium model. Good replicas copy the 36.6 mm round case, the fluted crown capped with a blue synthetic spinel, and the flinqué guilloché dial with Roman numerals and blued sword hands. Weak replicas miss the crown cabochon, print the dial pattern flat, and shift the date window off the numeral ring.
What does "medium" mean in the Ballon Bleu line?
Cartier builds the Ballon Bleu in several sizes, and medium sits between the 33 mm small quartz models and the 42 mm large versions. The medium is 36.6 mm across and about 10 mm thick, and it runs on an automatic movement, which is why it is the most replicated size. Because it fits most wrists, the medium outsells every other size in both genuine and replica form.
Which details give a fake Ballon Bleu medium away?
- Crown cabochon: the genuine uses a blue synthetic spinel set in a fluted crown. Cheap fakes use glass or dyed plastic that looks cloudy under light.
- Dial texture: the guilloché pattern is stamped or engraved, so the ridges catch light in straight lines. Printed dials look flat and fade at an angle.
- Hands: genuine sword hands are blued steel with crisp bevels. Replica hands are often painted blue and read grey at the edges.
- Date window: it should sit inside the Roman numeral ring at 3 o'clock, aligned with the numeral height, not dropped toward the center.
- Caseback: engraving should be sharp and evenly spaced, with the reference and serial matching the model.
What movement sits inside a fake Ballon Bleu medium?
Most replicas use a Japanese Miyota 9015, a Seagull ST18, or a Chinese copy of the ETA 2892. The genuine medium runs on the Cartier caliber 049, which is itself a modified ETA 2892-A2, so an A2892 clone gets closest to the real beat rate and hand feel. Ask for a timegrapher photo. Readings inside plus or minus ten seconds a day are normal for a well-built replica.
Which materials and finishing matter most?
Case steel should be 316L at minimum, with polished and brushed surfaces meeting at a clean line. Sapphire crystal with anti-reflective coating matters more than the case, because the Ballon Bleu dial is meant to look deep and clear from every angle. Bracelets should taper, fold flat, and hold the watch near 120 grams on the medium, which tells you the links are solid rather than hollow.
What should you check before buying a replica Ballon Bleu medium?
- Confirm the case measures 36.6 mm and the thickness stays near 10 mm.
- Request real photos of the crown cabochon and the dial at an angle.
- Ask which movement is installed and for a timegrapher readout.
- Check date alignment and hand alignment at 12 o'clock.
- Verify the bracelet clasp closes flush and the screws are not stripped.
FAQ
Is the fake Ballon Bleu medium the same size as the real one?
The best replicas match the 36.6 mm diameter, the 10 mm thickness, and the 20 mm lug width. Budget versions often run 1 mm wider, which changes how the watch sits on the wrist.
Can a jeweler tell a Ballon Bleu medium replica from the real thing?
Yes. A watchmaker can check the movement finish, the crown spinel under a loupe, and the caseback engraving depth within a minute on a bench.