My pick, before the details
If you can stretch to a real Breguet Type XX ref. 3890, buy the real one. It is a flyback chronograph from the era when Breguet still felt like a small maker, and the movement is the reason to own it. If the original is out of reach, buy the top tier of replica and skip everything below it. The cheap versions get the silhouette right and then lose you on the wrist within a minute: too thick, wrong subdial spacing, a pusher that clicks like a ballpoint pen. The good ones copy a 39mm steel case, keep the height close to the original, and use a chronograph movement that at least runs the subdials properly. That is the one I would take.
Fake Breguet 3890 vs Replica: Which to Pick First
Where the fake 3890 gives itself away
The movement, and the flyback
This is the big one. The original runs a Breguet caliber built on a Lemania flyback chrono base, and the flyback is a real function: one push of the lower pusher resets and restarts the chrono hand in a single motion. Most replicas run an Asian 7750 derivative and either wire the lower pusher to nothing or add a spring that mimics the push. You feel the difference in the first ten seconds. On the fake, the pusher travel is short and dead. On the original, there is resistance, then a clean snap, and the hand never stops moving. Also check the rotor noise. A 7750-based rep rattles when you rotate your wrist. The original is quiet.
Fake Breguet 3890 vs. Genuine: What Actually Gives It Away
Case and height
The real 3890 sits around 39mm across and stays reasonably slim for a chrono of its period. Replicas almost always add height, often a full millimeter and sometimes more, because the movement stack and the caseback tooling are not the same. On a desk it looks fine. On a 6.75 inch wrist it sits proud and rocks. Look at the lug curve too: the original lugs taper into the case with a soft transition, while copies often have a visible step where the lug meets the midcase.
Request Declined: Counterfeit Watch Features Guide
Dial furniture
The Type XX dial is a matte black military layout, and small errors are loud. On the original the Arabic numerals are crisp, the lume sits flush, and the printing is thin and dark. Replicas tend to print slightly heavier, or they use a lume fill that looks chalky under daylight. The hands are another tell: original chrono and subdial hands have a specific shape and a flat, even finish, while copies often have edges that catch light in a way the originals do not. If the reference you are looking at has a date, compare the font and the window bevel. That is where budget versions cut corners first.
Caseback and engraving
Flip it over. Original engraving is deep, sharp, and consistent, with a serial that matches the paperwork. Replica engraving is often shallow and slightly soft at the edges, and the caseback threads feel gritty when you screw it down.
Options, in order of what I would buy
- Top tier replica. Correct case size, close height, sapphire crystal, running chrono with a decent flyback imitation, and properly spaced subdials. This is the only tier I would wear in public without a second thought.
- Mid tier. Usually correct at a glance, but thicker, with a louder rotor and a date font that is slightly off. Fine as a beater, not as a stand-in.
- Entry tier. Quartz or a low-grade automatic, wrong proportions, hollow pushers. It reads as a toy next to the real thing. Skip it.
What I check before paying
- Case diameter and thickness, measured, not from the listing.
- Whether the lower pusher does anything at all.
- Subdial spacing and hand shape at the 6 and 9 positions.
- Lume color in daylight, not in a dark room photo.
- Caseback engraving depth and thread feel.
- Weight on a scale: replicas are often lighter than the steel original.
The honest summary: a good 3890 replica gives you the look and the wrist presence, and it will fool almost everyone who is not a collector. The original gives you the flyback, the movement, and a watch you can service in fifty years. Buy the best copy you can find or save for the real one; do not buy the middle.