Quick answer
A fake Rotonde de Cartier is a replica of Cartier's round-cased watch line. Genuine models use in-house movements, sapphire cabochons, and hand-finished cases. Replicas use generic movements, glass cabochons, and laser engraving. Genuine Rotonde de Cartier case sizes are 40mm, 42mm, 43mm, and 45mm. Prices for genuine steel models start near $8,000. Replica prices range from $150 to $800.
Genuine Rotonde de Cartier specs
- Case sizes: 40mm, 42mm, 43mm, 45mm
- Materials: steel, pink gold, white gold, platinum
- Movements: Cartier calibers 1847 MC, 1904-CH MC, 1904-PS MC
- Crystal: sapphire with anti-reflective coating
- Water resistance: 30m or 50m
- Crown: set with a blue sapphire or spinel cabochon
Common tells on replicas
- Crown cabochon. Genuine uses a faceted blue sapphire or spinel. Replicas use glass or resin. The color is off. The setting is glued, not crimped.
- Dial print. "Cartier" text is thin and sharp on genuine. Replicas show thick letters. "Swiss Made" sits at 6 o'clock. Replicas misplace it or use the wrong font.
- Hands. Genuine hands are blued steel, sword shape. Replicas are painted, thicker, and have rough edges.
- Caseback. Genuine has deep engraving with reference and serial numbers. Replicas have shallow laser marks. Font is wrong. Hallmarks are missing.
- Movement. Genuine has Geneva stripes, perlage, and engraved Cartier logo. Replicas use ETA clones or Chinese movements with no finishing.
- Strap. Genuine uses alligator leather with a signed buckle. Replicas use cowhide with loose stitching.
Reference numbers
Genuine Rotonde de Cartier references include W1556368 (40mm steel automatic), W2RN0005 (42mm pink gold chronograph), and W1556369 (40mm pink gold automatic). A reference number does not prove a watch is genuine. Replicas copy reference numbers. Check the serial number against Cartier records. Cartier does not publish a public serial database. An authorized dealer can verify a watch.
Movement checks
Open the caseback or view the movement through a display back. Genuine Cartier movements have consistent finishing. Screws are polished. Rotor engraving is crisp. Replicas show tool marks, uneven stripes, and painted lettering. The 1904-CH MC chronograph movement has a column wheel. Replicas use a cam-actuated chronograph. Push the chronograph buttons. Genuine buttons have a smooth, light action. Replicas feel stiff or gritty.
Case and dial details
Measure the case with calipers. Genuine 40mm models measure 40.0mm across the bezel, not including the crown. Replicas measure 0.5mm to 1mm larger in many cases. Check the crown. Genuine crown has a flat top with a faceted cabochon. Replicas have a domed top. Check the lugs. Genuine lugs are curved and polished on the sides. Replicas have sharp edges. Check the dial. Genuine dials have a grained finish. Replicas use flat paint. The date window on genuine models sits at 3 o'clock with a matching font. Replicas show a different font and a recessed window.
What to ask a seller
Ask for a photo of the caseback engraving. Ask for a video of the movement. Ask for the serial number and reference number. Ask if the watch comes with box and papers. Genuine Cartier boxes have a specific texture and logo. Papers include a warranty card with a date and dealer stamp. Replicas ship with generic boxes and no papers in many cases. A low price is a signal. A steel Rotonde de Cartier under $5,000 is a replica or a damaged watch.