What 830107 Means
Cartier does not publish a reference number 830107 for any Tank model. The number appears in third-party marketplace listings as a seller SKU. It does not match the Cartier reference format, which uses letter and digit codes such as W5200005 for the Tank Solo and W51008Q3 for the Tank Francaise. Treat 830107 as a listing code. It carries no factory meaning.
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Pick First: A Pre-Owned Authentic Tank
A pre-owned Tank Solo or Tank Must from a dealer with a return window is the option that holds value and can be serviced. Cartier boutiques and Richemont service centers accept these watches for repair. Serial and reference numbers are engraved on the caseback, and the numbers can be checked against the Cartier archive. Prices move with model, size, metal, and condition, so compare current sold listings before you pay.
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Option Two: Rectangular Dress Watches From Mainstream Brands
Several brands sell rectangular dress watches with similar proportions and a quartz or mechanical movement. They cost less than a Cartier Tank, carry a manufacturer warranty, and can be repaired by any watchmaker. They are not Tanks. The case shape, dial layout, and crown position differ on close inspection.
Fake Cartier Tank 830107 New: What the Code Means
Option Three: Replica Listings
Replica sellers describe the 830107 listings with claims about movement type, plating, and strap material. Verify each claim against the photo. Replicas ship with no Cartier warranty, no service history, and no parts support. Cartier will not authenticate or repair them.
What to Compare in a Listing
- Movement: state whether the watch is quartz or automatic. Many Tank replicas use a quartz module.
- Case size: Cartier lists dimensions to a tenth of a millimeter. Listings that round or omit size make fit unpredictable.
- Caseback: authentic Tanks carry an engraved reference, a serial, and a Swiss Made mark. Replicas use laser etching with shallow lines.
- Crown: many Tank models use a blue spinel or sapphire cabochon in the crown. Photos should show the stone and the crown threads.
- Dial: printed numerals, the chemin de fer minute track, and the hidden Cartier signature in the VII. These details are hard to copy at small size.
- Papers: replicas may include a printed card. A card that no boutique can verify has no value.
Legal and Practical Risk
In the United States, trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320. Penalties include fines and prison. U.S. Customs and Border Protection seizes counterfeit watches at ports of entry. A seized shipment means the buyer loses both the item and the payment. Resale is a second exposure, because listing a counterfeit as a Cartier violates trademark law.
Verdict
Order of choice: pre-owned authentic Tank first, a legal rectangular alternative second, a replica listing last. The 830107 listing has no Cartier reference behind it, no warranty, and no service path. Buyers who want the Tank shape and a valid warranty should price pre-owned examples and compare condition reports before paying for a replica that cannot be repaired or resold.