Replica Cartier Tank 830107: The Short Answer
830107 is not a Cartier reference number. Cartier does not publish a Tank model, case code, or movement caliber under that string. The number shows up in replica marketplaces as an internal listing or batch tag that a seller assigns to one counterfeit build. When a search result reads "replica cartier tank 830107," you are looking at a seller's catalog ID, not a factory model and not a documented watch.
That matters because the number carries no verifiable information. It does not tell you the case size, the movement inside, the strap material, or which Tank variant the seller copied.
How Cartier Actually Labels a Tank
Cartier identifies watches through reference numbers stamped on the case back and logged in its own catalog. Modern references follow a W-prefixed pattern, such as WSTA0040 or W5200005. Vintage Tanks use short numeric references engraved on the case back, paired with a separate case number.
Two checks separate a real reference from a seller tag:
- The reference resolves to a Cartier catalog entry with photos and specs.
- The case back carries both a reference and an individual case number, engraved with clean depth and consistent spacing.
A six-digit code floated only by resellers fails both checks.
Steps to Evaluate an 830107 Listing Before You Pay
- Ask the seller for a clear photo of the case back, including the full engraving.
- Search the engraved reference against Cartier's own model listing to see whether it matches a real watch.
- Request a photo of the movement and compare the finish, jewel count, and rotor engraving to the caliber the seller claims.
- Ask what happens if customs detains or seizes the shipment, and get the refund policy in writing.
- Confirm whether any watchmaker will service the movement once it arrives.
- Check the return window and the payment method before you commit.
Legal and Practical Risks
Trafficking in counterfeit goods is a federal offense under 18 U.S.C. § 2320, and U.S. Customs and Border Protection seizes counterfeit watches as part of its intellectual property enforcement work. A seized parcel is usually destroyed, and the buyer has no recourse against the carrier.
Beyond the legal exposure, a counterfeit Tank has no manufacturer service path. Cartier will not repair, authenticate, or supply parts for it. Resale value sits near zero, and plated cases and unknown alloys can irritate sensitive skin. Sellers rotate listing codes often, which means 830107 may point to a different watch next month.
What the Number Tells You
Treat 830107 as marketing shorthand. If a seller cannot tie the watch to a verifiable reference, a documented caliber, and a stated return policy, the code is the only thing you can confirm about the product.