how to check date code louis vuitton

June 16, 2026 Blog 2 views

You’ve just scored a gorgeous Louis Vuitton bag from a consignment shop, or maybe you’re eyeing a pre-loved find online. The price is tempting, the patina looks perfect, and the canvas has that iconic monogram glow. But then a little voice in your head whispers: “Is this actually authentic?” If you’ve ever felt that knot of uncertainty while shopping for luxury goods, you’re not alone. One of the most powerful tools in your authentication toolkit is the humble date code—a tiny stamp that tells you where and when your bag was made. Learning how to read it can save you from a costly mistake and give you peace of mind.

What Exactly Is a Louis Vuitton Date Code?

Let’s clear up a common misconception first: a Louis Vuitton date code is not a serial number. Unlike the unique identifiers on a car or a smartphone, date codes aren’t one-of-a-kind. Instead, they’re like a batch number that reveals the week and year of manufacture, along with the country where the item was produced. Think of it as a birth certificate for your bag—minus the baby’s name. Since the 1980s, Louis Vuitton has used these codes internally for quality control and inventory tracking. For us shoppers, they’re a quick way to check if a bag’s age matches its condition and to spot obvious fakes.

The Anatomy of a Date Code

A typical Louis Vuitton date code consists of a combination of letters and numbers. The letters indicate the country of manufacture, while the numbers represent the week and year of production. For example, a code like “AR1220” breaks down like this: “AR” stands for France (specifically, the Francs atelier), “12” is the 12th week of the year, and “20” is 2020. So that bag was born in late March 2020. Simple, right? But here’s where it gets tricky: the format has changed over the decades, and older bags use a different system. Don’t worry—we’ll walk through each era so you can decode any vintage piece.

A Brief History of Date Code Formats

Louis Vuitton didn’t always stamp codes the same way. Understanding the evolution helps you date a bag accurately and spot anachronisms that scream “fake.”

The Early Years (1980s to 1990s): In the 1980s, bags had three- or four-digit codes. A code like “873” meant the 87th month? No—it actually meant the 8th month of 1987. Wait, that’s confusing. Let’s clarify: the first two digits were the year, and the last one or two digits were the month. So “873” would be March 1987. But here’s a twist: sometimes the order was reversed, with month first and year second. It took a trained eye to read these correctly. By the early 1990s, Louis Vuitton standardized to a four-digit format: first two digits for the year, last two for the month. “9104” meant April 1991.

The Modern Era (1990s to 2021): Starting in the mid-1990s, the brand introduced the letter-number combination we know today. The format became “XX1234,” where the letters denote the factory location, and the four digits represent week and year (first two digits for week, last two for year). So “FL2135” means the bag was made in the 21st week of 2015 at a factory in France. This system remained consistent until 2021.

The Post-2021 Shift: In 2021, Louis Vuitton quietly phased out date codes entirely for most new products, replacing them with microchips embedded in the lining. If you’re buying a brand-new bag, you won’t find a visible date code—only a chip that can be scanned by the brand. This change was driven by the rise of counterfeiting and the need for more secure tracking. However, for pre-loved bags made before 2021, date codes are still your best friend.

Where to Find the Date Code on Your Bag

Location varies by style, but here are the most common spots to check:

Inside the main compartment: Often stamped on a leather tab or directly on the lining, near the seam.
Along the interior zipper pocket: Look for a small leather patch or a direct impression.
Under the front flap (for handbags): Some styles like the Speedy have the code on the interior pocket’s edge.
On the side of the bag: For travel pieces like Keepalls, you might find it on the side interior leather trim.
On the luggage tag: Rarely, but some older pieces have it on the tag itself.

Use a flashlight and a magnifying glass if needed—the stamp can be faint, especially on older bags. Never try to peel or lift the lining; just look carefully.

How to Decode the Letters (Factory Locations)

The two-letter prefix tells you where the bag was made. Here are the most common ones:

AR, AS, A0, A1: France
CA, CK, CT, CX: Spain
FC, FH, FL, FR: France
LO, LP, LW: USA
MB, MI, MO, MX: Italy
SD, SF, SP: France
TA, TC, TH, TJ: France
VI, VX: Italy

If you see a letter combination that doesn’t match any known factory, that’s a red flag. But don’t panic—newer factories occasionally appear. Cross-reference with the bag’s overall quality and other authentication markers.

Decoding the Numbers (Date and Week)

For bags from 1990s to 2021, the four-digit number after the letters is your treasure map. Let’s use “CA1021” as an example. “CA” means Spain. “10” is the 10th week of the year (early March), and “21” is 2021. So this bag was made in Spain during the first week of March 2021. For older codes, remember the format: before 1990, it was year-month; after 1990, it was month-year. A code like “8910” would be October 1989, while “1090” would be October 1990. Notice the subtle shift? That’s why context matters.

Red Flags: When Date Codes Lie

Fake bags often have date codes too—but they’re usually wrong. Here are common mistakes counterfeiters make:

Impossible dates: A code like “5302” would mean the 53rd week of 2002, but there are only 52 weeks in a year. If you see week 53 or higher, it’s fake.
Future dates: A bag with “5223” would be from 2023, but if you’re buying a “vintage” piece from the 1990s with that code, something’s off.
Wrong factory letters: Some letters like “AA” or “ZZ” don’t correspond to any known factory. Do your homework.
Font and spacing: Authentic stamps are crisp, evenly spaced, and slightly recessed. Fakes often have blurry, misaligned, or raised letters.
Location mismatch: A bag made in France should have a “Made in France” stamp elsewhere. If the date code says “FL” (France) but the bag says “Made in Italy,” that’s a problem.

Practical Tips for Shopping Pre-Loved Louis Vuitton

Now that you’re armed with date code knowledge, here’s how to use it wisely. First, always ask the seller for a clear photo of the date code before buying. If they refuse or give excuses, walk away. Second, use the code to check if the bag’s age matches its condition. A 2015 bag with minimal wear might be legitimate, but a 2005 bag that looks brand new could be a red flag (or just well-cared for—trust your gut). Third, don’t rely solely on the date code for authentication. Counterfeiters have gotten better, and some fakes have correct codes. Always examine the stitching, hardware, leather quality, and overall craftsmanship. Finally, remember that bags made after 2021 won’t have a date code at all. If a seller claims a 2023 bag has one, they’re either misinformed or selling a fake.

For the best experience, buy from reputable resellers who offer authentication guarantees. Websites like The RealReal, Fashionphile, or local luxury consignment shops with good reviews are safer bets than random Instagram sellers. If you’re buying in person, bring a UV light—some date codes are only visible under ultraviolet light on newer bags. And always trust your instincts: if the price is too good to be true, it probably is.

Decoding a Louis Vuitton date code is like learning a secret language. Once you master it, you’ll feel confident every time you unbox a pre-loved treasure. So next time you’re browsing vintage listings, don’t just admire the patina—ask for that code. It’s your ticket to authenticity and a smarter shopping experience.