The Blancpain 5200 is the reference number for the Fifty Fathoms Bathyscaphe Chronographe Flyback. A replica 5200 copies that watch: a 43.6 mm case, a three-register chronograph dial, and a dive bezel. Replicas are not made by Blancpain and carry the brand's trademarks without a license.
What the 5200 reference covers
Blancpain uses 5200 for the Bathyscaphe chronograph line. The 5200-0130-B52A ships in black ceramic. Other 5200 codes cover titanium and steel cases, plus bracelet and strap options. The digits after 5200 identify case material, dial, and strap. Two 5200 watches can look different and share the same movement.
Specs that replica makers target
- Case: 43.6 mm diameter, ceramic, titanium, or steel.
- Movement: calibre F385, automatic, column wheel, vertical clutch, flyback. Blancpain lists 5 Hz (36,000 vph) and 50 hours of power reserve.
- Water resistance: 300 m on the genuine watch.
- Crystal and bezel: sapphire crystal, ceramic bezel insert.
- Dial: three subdials and a date window near 4:30 on most versions.
Where replicas diverge
Movement is the first gap. The F385 is a high-beat column wheel caliber. Most replica 5200s use a 4 Hz Asian chronograph movement, such as a Seagull ST19 or a modified 7750 clone. The small seconds subdial ticks 8 times per second instead of 10. Flyback is often missing or decorative.
Case size varies by factory and batch. Measure with calipers before you compare a replica to the reference number.
Water resistance is the second gap. Blancpain rates the 5200 at 300 m. Replica cases use rubber gaskets and screw-down casebacks, and most sellers do not pressure test. Treat any replica as not dive rated until a watchmaker tests the seal.
Finishes differ at the bezel, the dial printing, the date font, and the caseback engraving. Depth of engraving and the spacing of the subdials are the points buyers check first.
How to inspect one
- Put it on a timegrapher. A 5 Hz reading points to a caliber built for the F385 layout; 4 Hz points to a generic chronograph.
- Run the chronograph and press the flyback pusher. The hand should snap to zero and restart in one motion.
- Measure the case with calipers. Check diameter against 43.6 mm.
- Read the caseback. Reference number, serial, and caliber text sit under the sapphire display back on the genuine watch.
- Pressure test at a watchmaker before any water contact.
Legal and service notes
Replica watches infringe Blancpain trademarks. US Customs and Border Protection can seize counterfeit watches at import, and resale carries civil and criminal exposure. Service is the other limit. No Blancpain service center will work on a replica, and F385 parts are not sold to the public.