Louis Vuitton Authentication Specialist
French luxury house specialist. Covers Chanel, Celine, and Saint Laurent construction and date coding.
Last updated September 2026 · Published June 2026 · Contact
The LV Bum Bag: What You Are Actually Checking
The Louis Vuitton Bumbag is a crescent-shaped waist and cross-body bag. In Monogram canvas it is the version most people mean, and resale listings date its launch to 2018. It has been copied heavily since, largely because the shape is simple and demand on resale platforms is high. Older and rarer variants sit under the same search terms: a Damier Ebène "Melville" bum bag with a zipped front pocket and a buckle strap, and the quilted leather New Wave Bumbag, both of which appear in our archive.
This guide is built from authenticated Bumbags in our own order archive. We also looked through a sample of fake-labelled bum bag orders to see whether any tell repeated. What we found is covered below, and it is less than most guides on this bag promise.
Worth knowing
We do not have a repeatable counterfeit tell for the Bumbag that we would stand behind, so this guide has no ranked "fake tells" table. It shows what genuine Bumbags look like up close so you can check a specific bag against them. Several fake-labelled orders looked convincing, and a fake-labelled order carried a perfectly valid date code.
The Front Patch and the Zips
On the genuine Monogram Bumbags we reviewed, a small pentagon-shaped vachetta patch sits at the centre front, stamped "LOUIS VUITTON PARIS". A vachetta handle runs across the top, and two brass zip pulls sit at the end of the zip. The vachetta strap has reddish-painted edges and brass buckles.
Vachetta darkens with use. A pale, new-looking patch and a honey-coloured, well-handled one can both be genuine, so colour alone tells you age, not origin.
The Stamped Handle
The top handle carries the same "LOUIS VUITTON PARIS" stamp, running along its length, with a registered mark above the name. The impression is soft and shallow in natural leather, and the yellow stitching on each side runs in a straight, even line. Genuine stamps wear with handling, so a faded stamp on a used bag is not a red flag by itself.
The Zip Pull
The pull on the bags we reviewed is a brass, cut-out piece with an LV monogram on its face, attached to a brass slider on a metal zip. Some older guides describe the pull as being stamped with the full words "LOUIS VUITTON". The pull in our photo carries the LV monogram instead, so we would not use that as a check.
The Interior Tab and Lining
Inside, a cream leather tab is stitched in yellow thread onto a dark, ribbed textile lining. The tab reads "LOUIS VUITTON PARIS" with a country line beneath it. The lining was navy in several of the bags we reviewed and black in others.
The country line is not always "made in France". This authenticated Bumbag is stamped "made in Spain". Louis Vuitton makes bags in several countries, so a Spanish or other non-French label is not a tell. What matters is whether it agrees with the date code, covered next.
The Date Code Tab
Bumbags made before about 2021 carry a small leather tab inside, beside the zip, stamped with two letters and four digits. On this bag it reads CA4200. For codes from 2007 to about 2021, the first and third digits are the week and the second and fourth are the year: week 40 of 2020. The letters CA are commonly listed as a Spanish workshop, and this bag's interior tab reads "made in Spain", so the two agree. Another genuine Bumbag in our archive carries SA2200, week 20 of 2020, with a "made in France" tab; our date code guide shows that tab.
Because resale listings date the Monogram Bumbag's launch to 2018, a code claiming an earlier date does not fit the model. Read the details in our date code guide and try the tool:
Worth knowing
From about 2021 Louis Vuitton replaced stamped codes with an internal chip, so a Bumbag from that period may have no visible code. That is normal. Our [chip guide](/blog/louis-vuitton-rfid-chip-guide) explains what a phone can and cannot tell you about it.
What We Did and Did Not Find on Fakes
We looked at a selection of the fake-labelled bum bag and fanny pack orders in our archive that match those search terms. The honest summary:
- Several were not Bumbags. Some of the orders were other items, such as Multi Pochette sets and a flat belt pouch. The order name is not a reliable guide to the item.
- Others were different versions. Among the rest were a black Empreinte-style bag, a shearling-covered bag and a giant-monogram fanny pack, so they cannot be compared to a standard Monogram Bumbag.
- Some looked convincing. A fake-labelled Monogram Bumbag carried a legible interior tab and a date code, FL1290, that decodes cleanly to week 19 of 2020.
- A code did not decode. A giant-monogram fanny pack carried SP5288, which fits no week or month, but an isolated example does not make a pattern.
We found no detail that repeated across independent fakes and was absent on the genuine bags, so we are not listing one. Older guides to this bag cite stitch counts, exact shades of yellow and stamped D-rings; we could not confirm any of those against our own photos, so we have left them out.
What to Rely On, and What Not To
- Rely on: an all-round match to the genuine details above (patch, handle stamp, zip pull, interior tab), a date code that decodes for the era and does not predate the model, and clear close photos from the seller.
- Do not rely on: a date code alone (a fake carried a valid one), a "made in" country by itself, the box or dust bag, or a chip scan. Louis Vuitton does not issue authentication certificates for bags.
When to Get a Professional Opinion
If the bag matches everything here and the price is significant, a professional check of close photos is the reliable next step. Our authentication service looks at the patch, handle stamp, zips, interior tab and date code and returns a verdict within 24 hours.
A code that checks out doesn't prove the item is real. Counterfeiters copy genuine codes.
Our authenticators check the stamps, hardware and construction of your Louis Vuitton against verified references, from $25. You get a verdict within 24 hours, and a Certificate of Authenticity if the item passes.
Authenticate My Louis Vuitton →Related Guides
- Louis Vuitton date code guide
- Louis Vuitton RFID chip guide
- How to authenticate a Louis Vuitton Multi Pochette
- How to authenticate a Louis Vuitton Pochette Accessoires
- How to authenticate a Louis Vuitton Speedy
FAQ
How can I tell if a Louis Vuitton Bumbag is real?
Compare the front patch, the handle stamp, the zip pull, the interior tab and the date code with the genuine details above, and check that the code and the "made in" line agree with each other. No single check is decisive, so use all of them together, and get a professional opinion if the price is high.
Is a "made in Spain" Bumbag fake?
No. Louis Vuitton makes bags in France, Spain and other countries. The authenticated Bumbag shown above is stamped "made in Spain" and its date code starts with CA, which is commonly listed as a Spanish workshop.
Does a Bumbag with no date code mean it is fake?
Not necessarily. From about 2021 Louis Vuitton moved from stamped codes to an internal chip, so a recent bag may have no visible code. On an older bag, look with raking light and empty the pockets first, because the tab can be tucked away.
Can I scan the chip in a Bumbag with my phone?
A phone can often detect that a chip is there, but it cannot read the data Louis Vuitton uses, and we know of no public Louis Vuitton page that confirms a chip for customers. A chip also does not prove the bag is genuine.
Are older Damier Bumbags the same as the Monogram one?
They are different styles. The Damier Ebène "Melville" style we reviewed has a zipped front pocket and a buckle strap, and the New Wave Bumbag is quilted leather. The same kinds of details apply (stamps, zips, tab, code), but compare them with the same version rather than the Monogram Bumbag.
