Louis Vuitton Date Code Decoder

Date code or serial number: which is it

Louis Vuitton uses a date code, not a serial number. The distinction is not pedantry: a serial number is unique to one item, while a date code only tells you where and when a batch was made. Two bags of the same model that left the same factory in the same week carry the same code, and both are genuine.

So looking up an owner or an item history by that code goes nowhere: no public database exists for it, at Louis Vuitton or anywhere else. All the code gives you is a country of manufacture and a period.

How to read a code in half a minute

Take VI0963. The two letters are the factory: VI is France. The digits are then read crosswise: first and third give the month, second and fourth the year. That is 0 and 6 for June, 9 and 3 for 1993. Result: France, June 1993.

Now SD2129. SD means France or the USA, and the “made in” line on the heat stamp settles which. The digits read crosswise the same way, but from 2007 the first pair is a week rather than a month: 2 and 2 give week 22, 1 and 9 give 2019. Result: late May 2019.

The same shape of code is read two different ways, and which one applies depends on the era. That is why a 1990s code run through the weekly formula produces nonsense – it is the most common mistake in DIY decoding, not evidence of a fake.

Date code formats by era

Factory codes and countries

The most common codes per the authenticator community. Not exhaustive – rarer codes exist.

Telling a real date code from a fake one

The code on its own settles very little, because replicas learned long ago to copy valid codes off genuine items. The real information is not in what the code says but in how it was applied and whether it agrees with everything else.

Look at the execution. Louis Vuitton heat-stamps the code into the leather rather than printing it in ink. The stamp sits slightly recessed, the typeface is thin and even, the letters share one height. A code printed on top of the surface is a serious reason to slow down.

Look at the agreement. The factory code has to match the “made in” line on the heat stamp: a Spanish code on a bag stamped “made in France” is a contradiction that does not occur on a genuine piece. The year has to match the model: a 1995 code on a model launched in 2015 is impossible.

And look at the format as a whole. An invalid format – month 15, week 60 – is a strong signal. An unfamiliar letter pair is not: nobody, the brand included, has ever published the full list of factory codes.

Where to find the code inside the bag

The code is almost never on display. Most often it sits on a small rectangular leather tab sewn into the lining along an interior seam – you have to feel for it and fold it back. On some models it is stamped straight onto the lining or the inside of a pocket; on others it hides near a side seam.

The location depends on the model and the year, and there is no single rule. So “the code is in the wrong place” is not a verdict on its own: compare against what is typical for your specific model, not for the brand in general.

On Epi leather and patent Vernis pieces the code usually sits differently than on monogram canvas. If you look for it on a canvas bag where you found it on an Epi one, you simply will not find it.

No code at all: three different reasons, three different conclusions

A missing code proves nothing by itself, but the reasons differ, and so do the conclusions.

First: the item is new. Through 2021 Louis Vuitton replaced date codes with an RFID microchip, rolling it out line by line rather than on a single date. The brand never announced an exact date. Items from mid and late 2021 turn up both with codes and with chips. The chip is read by in-store equipment only – Louis Vuitton offers no app that would let a buyer check a bag themselves.

Second: the item is very old. Pieces from before the early 1980s carry no date code at all. Looking for one on a 1970s bag is like looking for a VIN on a cart.

Third: the code wore off. The leather tab rubs against the contents of the bag for years, and on a used 1990s piece the code is often half-legible or gone. That is wear, not a fake.

What a date code does not prove

A valid code is necessary but not sufficient. Replicas copy real codes off genuine items, and a good fake passes this check without trouble. The reverse is stronger: an invalid format almost always means a problem.

Louis Vuitton itself ties authenticity not to a number on the item but to where you bought it. The brand’s own page states plainly: “Louis Vuitton never discounts its products. Louis Vuitton items advertised as discounted on the Web are invariably fake.” The same page says its products are sold only in Louis Vuitton stores, on louisvuitton.com and on 24s.com.

What is absent from that page matters just as much. Louis Vuitton publishes no date code format, no factory code table, no description of the chip. Everything authenticators work from, ourselves included, is a community reconstruction built from items with known dates.

Why no official table exists

No list of factory codes you will find online is official. The brand has never published one. The lists were assembled by authenticators and resale platforms from items of known date and origin, and they disagree with each other in places.

The disagreements are not random. Some codes are used in more than one country: LA, SD and FL appear on both French- and US-made pieces. Different guides file them differently because each worked from its own sample. There is one arbiter here, and it is the “made in” line on the heat stamp.

The practical takeaway: treat any code table, ours included, as a summary of observations rather than a document. If a code is not on the list, that means only that it is not on the list.

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