The short answer
The movement decides the grade. A replica Rotonde Astrotourbillon with a working tourbillon cage that turns once per minute, and a small seconds hand mounted on the cage axis, sits in the top tier. A replica with a decorated bridge under an open aperture and a separate seconds hand sits two tiers below it. Ask the seller for the movement name, a video of the cage in motion, and a caseback photo. If any of the three is missing, treat the listing as unverified.
What the original does
Roger Dubuis builds the Rotonde Astrotourbillon around a hand-wound caliber RD505SQ. The tourbillon carriage carries the small seconds hand on its axis, so the hand orbits with the cage at one turn each minute. Case sizes sit in the 44 mm to 45 mm range across references. Power reserve is listed near 60 hours on several references. Many Roger Dubuis movements carry the Poincon de Geneve, which covers finishing and rate testing. Confirm the exact numbers against the reference on the caseback. Roger Dubuis has issued several Rotonde Astrotourbillon variants in gold, in titanium, and in carbon.
cloned rotonde astrotourbillon
Real tourbillon vs. open-heart
The low tier copies the dial layout and puts a static or slow bridge under the aperture. The balance wheel oscillates and nothing else rotates. The middle tier uses a Chinese tourbillon, most often from the Seagull ST80 family or a clone of it, and the cage turns once per minute. The top tier adds hand finishing on the cage, blued screws, and a closer copy of the seconds hand. Beat rates differ across these groups. Note the rate on the listing and compare it with the reference.
counterfeit rotonde astrotourbillon
Inspection checklist
- Cage rotation. Time one full turn. It should take 60 seconds.
- Seconds hand. The hand should sit on the cage axis and orbit with it.
- Case thickness. Ask for a caliper photo. A movement module adds height.
- Dial print. Check letter spacing, the Roman numerals, and the chapter ring finish.
- Caseback. Look at engraving depth and the position of the seal markings.
- Weight. A steel case with a real tourbillon weighs more than a plated brass case.
Price ranges
Listings for a decorated open-heart version run about $350 to $700. Listings for a version with a working tourbillon run about $1,200 to $2,500. Price moves with case metal, strap, and finishing work. These are ranges seen on dealer pages, not fixed prices. Treat any quote far below the range as a signal to ask for video proof.
Best Guide to Finding Cloned Rotonde Astrotourbillon Watch Online
Questions for the seller
- Which movement is inside, by name and beat rate?
- Does the cage complete one turn per minute?
- Is the seconds hand fixed to the cage axis?
- What is the measured case diameter and thickness?
- Is the strap leather, and does it carry a signed buckle?
- What happens if the watch arrives dead or the cage stops?
Red flags
- Photos copied from another seller or from press images.
- No video of the running movement.
- Claims of Swiss origin with no movement photo.
- Payment methods with no dispute path.
- Pressure to buy off-platform after first contact.
Legal and service notes
A replica copies a trademarked design and is not a Roger Dubuis product. Customs officers in the US can seize shipments. No factory warranty applies, and spare parts for the movement are limited to what the dealer stocks. Servicing a Chinese tourbillon takes a watchmaker with parts access. Budget for that before you buy, and keep the dealer contact details in case the cage needs work.