A code like 8240029 is not a Cartier reference number. It is a wholesaler SKU that replica sellers attach to a listing for a counterfeit Cartier Tank. Cartier's own references carry letters in front of the digits, so a plain numeric code points to a factory catalog, not to a watch model.

What Does the Code 8240029 Refer To?

Replica wholesalers use internal item numbers to track stock across factories and price tiers. The same physical Tank often appears as 8240029 on one catalog, a five-digit code on a second, and a letter grade on a third. The number itself tells you nothing about size, metal, or movement.

Two sellers can list 8240029 and ship two different watches. Treat the code as a filing label and judge the watch from the photos, the specs, and buyer reports.

  • Case size: listings state dimensions in millimeters, such as 29.5 x 41 mm for a large steel model.
  • Movement: Swiss quartz, Japanese quartz, or an automatic clone.
  • Metal: stainless steel, gold plating, or solid gold on premium builds, which are rare.
  • Strap: leather with a deployant clasp, or a steel bracelet with screws.

How Cartier Reference Numbers Work

Cartier stamps an alphanumeric reference on the caseback of every watch it sells. The pattern runs seven or eight characters and starts with letters that point to a collection, followed by digits for size, metal, and dial.

  • WSTA: Tank Must, the steel entry line.
  • W4TA: Tank Française, the square case with the linked bracelet.
  • WGTA: Tank Louis Cartier in gold.
  • W520 and similar: older Tank Solo and discontinued steel models.

A steel Tank Must carries a code in the WSTA range, such as WSTA0041. You can check any number on the model page at cartier.com or ask a boutique to run it. A number that returns nothing is a warning sign.

How to Judge a Replica Tank Without the Code

Case and Proportions

The Tank is a rectangle with brancards that sit flush against the case. On weak replicas the sides bow out, the lugs look thick, and the edges stay sharp where the real piece gets a soft polish. Check that the crown sits centered and that the cabochon has a domed, deep red surface.

Dial, Printing, and Hands

Cartier uses Roman numerals with a hidden signature inside the VII or the X, depending on the model. Thin print, uneven spacing between numerals, or a flat blue sword hand are common tells on counterfeits. The Tank Must dial should be matte or sunray, never glossy plastic.

Movement and Caseback

A quartz replica ticks once per second with a visible jump. A genuine Cartier quartz movement also ticks, but the second hand lands on the markers and the caseback engraving is crisp. Automatic replicas run at 21,600 or 28,800 vibrations per hour and can be checked on a timegrapher.

Strap, Buckle, and Hardware

Genuine Cartier straps carry the logo and a size stamp on the underside, and the deployant clasp closes with a firm click. Replica straps often smell of new glue, use a generic tang buckle, or show stamped logos that fill with dirt.

What Are the Risks of Buying a Counterfeit Cartier Tank?

Counterfeit watches carry real legal exposure in the United States. U.S. Customs and Border Protection can seize a parcel that carries a registered trademark, and the buyer loses the money with no recourse.

  • Seizure and destruction of the parcel at the port, with no refund from the seller.
  • No warranty, no service parts, and no repair path through Cartier.
  • Almost no resale value. Counterfeit watches sell for a fraction of what buyers pay.
  • Water resistance claims that seldom hold up in a pool or a shower.
  • Passing a replica off as genuine in a sale is fraud and can bring civil and criminal penalties.

Questions About the 8240029 Cartier Tank

Is 8240029 a real Cartier reference?

No. Cartier references start with letters. A plain numeric code such as 8240029 belongs to a seller's inventory system.

Can I spot a fake from photos alone?

Sometimes. Photos reveal dial print, case shape, and hand finish, but movement type and gold content need a hands-on check. Ask for a shot of the caseback and the movement if the listing hides them.

What does a genuine Cartier Tank cost?

A steel Tank Must starts near $3,000 at retail. Gold Tank Louis Cartier models run from about $12,000 and up. Secondary-market steel Tanks often sell between $2,000 and $3,500 depending on condition, box, and papers.

Bottom Line

The code 8240029 tells you nothing about the watch behind it, because it comes from a wholesaler catalog rather than from Cartier. If you want a Tank, learn the genuine reference format first and compare every detail against it. Buyers who skip that step pay for a watch they cannot service and cannot resell.