How to recognize an original Louis Vuitton bag by its code (and new microchip)

Many people Google "how to recognize an original Louis Vuitton from the code" or "how to tell if a Louis Vuitton is authentic ." The code, called the "date code," has been a point of reference for years, but today it's no longer sufficient. In this article, we explain how codes used to work, what has changed with new microchips, and why professional authentication systems are needed to be sure.

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How to Read Louis Vuitton Bag Codes

• Until 2021, each bag had an alphanumeric code printed or sewn inside.

• The code indicated the country and factory of production + year/month or week .

• Examples:

  • AR1004 = France, October 2004.

  • DU4168 = France, week 41, year 2018.

👉 This explains why many search for “original Louis Vuitton code” or “Louis Vuitton bag interior code”.

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Because the code is not enough to tell if it is original

• The codes are easily replicable.

• Even a fake bag can have a consistent code.

• The absence or presence of code does not guarantee anything .

  Many counterfeiters know how to insert credible codes: this is where doubts arise for those who search on Google “how to recognize a fake Louis Vuitton” .

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From code to microchip

• Since 2021, Louis Vuitton has introduced an invisible NFC microchip instead of the code.

• The chip can be read with an app, but it only shows that the chip is there, not the data it contains.

• The actual data is encrypted and accessible only to Louis Vuitton systems.

⚠️ Warning: Some shady dealers claim "it has a chip, so it's original." In reality, anyone can buy and program a chip.

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How to recognize an original bag today

• Analyze stitching, materials, logos, hardware.

• Look for code (if pre-2021 bag) or chip (post-2021).

• Use professional authentication systems like Entrupy , the only one currently recognized internationally.

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Conclusion

Louis Vuitton codes tell the story of production but don't certify authenticity. Today, authenticity requires professional verification. At Aurea Luxury Lab, every bag is authenticated with Entrupy and comes only from official boutiques, never from outlets or uncertified channels .