Free luxury authentication tools

Designer Serial Number & Code Checkers

Start with the right Legitique checker for your brand. These tools help you decode visible date codes, serial stickers, leather tag numbers and style-code clues before you buy, sell or authenticate a luxury item.

Louis Vuitton

Louis Vuitton Date Code Checker

Decode classic Louis Vuitton factory and date-code formats, including country-code clues, week/year formats and the 2021 microchip transition.

Open LV date code checker
Chanel

Chanel Serial Number Checker

Estimate the likely era of a Chanel serial sticker or authenticity card and compare it with the model, hardware, font and construction.

Open Chanel serial checker
Gucci

Gucci Serial Number Checker

Check Gucci two-row serial tag formatting and search the built-in style-code database for selected model-code matches.

Open Gucci serial checker
Gucci Database

Gucci Style Code Database

Search a dedicated Gucci style-code reference for Marmont, Jackie, Dionysus, Ophidia, Soho, Bamboo, Diana, Y2K and accessory codes.

Search Gucci style codes

Why serial numbers and date codes are only the first step

Luxury code checkers are useful screening tools, but they should not be treated as final authentication results. Counterfeit items can use real-looking date codes, copied serial numbers, recycled model codes and plausible country markings.

Legitique uses code evidence alongside the full item: heat stamps, logo placement, fonts, stitching, glazing, hardware engraving, zipper brands, interior lining, model proportions, material behavior, packaging and any chip-related evidence where relevant.

How to choose the right authentication tool

Use the Louis Vuitton checker when the item has a visible LV date code. Use the Chanel checker for serial stickers or authenticity cards. Use the Gucci checker when you have a Gucci leather tag with one or two numeric rows.

If you are researching Gucci specifically, the style-code database gives a deeper model-code overview than a normal serial checker. It is useful when a seller claims a bag is a Marmont, Jackie, Dionysus, Ophidia, Soho or vintage canvas model and you want to compare the first-row code.

What to do after checking a code

1

Compare the code result with the brand stamp, model name, size, material, hardware color and known production period.

2

Look for contradictions such as a wrong country stamp, impossible era, mismatched style code or code repeated across many online listings.

3

Photograph the full item, interior tag, stamp, zipper, hardware, corners, stitching, handles, lining and packaging in bright indirect light.

4

Get a professional authentication review before buying, selling, returning, disputing or issuing a resale listing as authentic.

Need more than a code check?

A serial number, date code or model code can support authentication, but it cannot confirm authenticity alone. Get a professional Legitique review before making a high-value decision.

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