Short answer
The fake Cartier Earth and Moon is a replica of the Rotonde de Cartier Earth and Moon, a 47 mm platinum watch Cartier released in 2014. Replicas copy the case shape, the dial layout, and the lunar disc. They do not copy the movement. The genuine watch runs Cartier caliber 1904-LU MC. Most replicas run a quartz module or a generic automatic. The pusher that repositions the moon on the real watch does nothing on most fakes. Replica prices sit between about $80 and $400. The genuine watch is a limited production platinum piece, and secondary market prices are set by dealers and auction results.
What the original watch is
The Rotonde de Cartier Earth and Moon is a round platinum watch. Cartier lists a 47 mm case diameter and caliber 1904-LU MC, a self-winding movement with a moon module. The dial splits into two zones. An offset sub-dial carries the hour and minute hands. A disc below carries a moon over a stone sky. Watch media reports the sky disc in lapis lazuli. A pusher on the case side moves the moon disc so the wearer can set the phase for a chosen date. Cartier states the mechanism for that setting is patented. Production was limited. Cartier has not published a firm run size for every edition, and secondary sources disagree on the exact number.
knockoff cartier earth moon piece
What replicas copy
- Case diameter and profile. Most fakes list 47 mm. Measured diameter often lands between 45 mm and 49 mm.
- Dial print. The Cartier name, the model text, Roman numerals, and a hidden signature inside a numeral.
- The pusher near 4 o'clock. Some fakes fit a working pusher. Most do not.
- Stone discs. Fakes use dyed stone, glass, or printed plastic. Color shifts from batch to batch.
What replicas miss
- The movement. No replica uses caliber 1904-LU MC.
- Case metal. Fakes use steel with plating, not 950 platinum. Platinum is dense. A 47 mm platinum case weighs far more than a plated steel copy.
- Hallmarks. Genuine cases carry Swiss assay marks and a case number tied to a Cartier record. Fake stamps match nothing.
- Finishing. Bevels, screw heads, and dial print are the usual tells.
Checks before buying a replica
- Ask for the measured case diameter and the weight in grams.
- Ask for a clear photo of the caseback and the engraving.
- Ask which movement is inside and the beat rate. 28,800 vibrations per hour points to a mechanical movement. 32,768 Hz points to quartz.
- Ask how the moon pusher behaves. A seller who cannot answer does not have the watch in hand.
- Get the return policy in writing.
Legal position in the US
Cartier is a registered trademark. In the US, 18 U.S.C. 2320 makes trafficking in counterfeit goods a federal crime. U.S. Customs and Border Protection seizes counterfeit watches at the border and sends the importer a seizure notice. Buying a counterfeit for personal use is not the same charge as selling one, but the item can still be seized and destroyed. Cartier and its parent company Richemont file civil claims against sellers.