Short answer
A fake Breguet Tourbillon ref. 3358 copies a hand-wound Classique model. The tourbillon sits at 6 o'clock. Replicas of this reference come in two builds: a real tourbillon movement from a Chinese maker, or a standard movement with a rotating plate under the dial. The second build looks close in photos and fails in the hand. Check the cage first, then the case, then the dial.
What the reference looks like
Breguet reference 3358 belongs to the Classique Tourbillon family. Published photos and auction listings for the family show a round case near 35 mm, a silvered dial with hand-turned guilloche, Roman numerals, and blued steel hands with hollow tips. Variants exist with plain and diamond-set bezels, in yellow gold and white gold. Breguet does not publish a full spec sheet for every variant. Confirm any detail against the Breguet archive or an auction record before you trust a listing.
Check 1: the tourbillon cage
- Rotate the watch so the cage is visible from the front. A true tourbillon cage completes one turn in 60 seconds. Time it with a phone.
- Look through the caseback. The cage must carry the balance wheel and the escapement, pallet fork and escape wheel included.
- Pull the crown to stop the seconds. On a real tourbillon the cage stops too, because the gear train drives it.
- A fixed balance wheel with a spinning disc below it is decoration. That build is the most common fake at this reference.
Check 2: case and size
Replica cases at this reference run large. A 40 mm case behind a 3358 dial is wrong. Measure the diameter with calipers and the thickness with a gauge. Lug width and lug shape matter as well. The reference uses straight, thin lugs, not the wide curved lugs found on sport models.
Check 3: dial and hands
- Guilloche on a genuine dial is cut on a rose engine. The lines are deep and even. Stamped replica dials show shallow lines and a flat sheen.
- Breguet hands are blued steel. The blue comes from heat, so the tone shifts with the light. Painted hands stay one shade.
- Look at the secret signature and the Swiss made mark at 6 o'clock. Blurry edges mean pad printing.
Movement and price signals
A working Chinese tourbillon costs more to build than a standard three-hand movement. Listings priced near a plain replica do not contain one. Ask for a photo of the movement with the caseback off, plus a timegrapher photo. Rate, amplitude, and beat error are numbers you can compare across listings. Gold content is the one item you cannot test from a photo. If the seller claims solid gold, ask for a hallmarked caseback photo or a test report.
What photos cannot show
Photos cannot show rate stability over days, water resistance, or service history. They also cannot confirm gold. Treat a listing without caseback photos as unknown, not as good.
Quick checklist
- Cage turns once per minute.
- Cage holds the balance and the escapement.
- Case diameter near 35 mm.
- Hand-wound movement, no rotor.
- Deep guilloche with crisp print.
- Timegrapher numbers supplied.