Most handbag authentication advice is a decade out of date. Even stitching, heavy hardware and a plausible date code are reproducible at scale, and they are reproduced: a high-grade counterfeit passes every check a shopper can perform with her eyes. The checks below still matter, because they eliminate the low and mid-tier fakes that make up most of what is offered secondhand. For the top tier, pay for an instrument-based authentication and treat that result as the only evidence that counts.
That is no reason to give up on buying secondhand, only a reason to stop treating a checklist as a verdict. A check that can only eliminate is still worth running, as long as you know what a pass really means.
The order to work in
- 1
Check the material logic before the logo
The classic Louis Vuitton monogram is coated canvas, not leather. A seller describing a monogram bag as leather is either mistaken or selling a fake. The same test applies everywhere: a brand that uses a particular material for a particular line should be consistent about it.
- 2
Open the bag and look at the interior
Blind stamps, "Made in France", "Made in Italy" or "Made in Spain", lining quality and the way the pocket is attached. A plastic-feeling lining in a bag that retails for thousands is a warning, not a quirk.
- 3
Turn the hardware under a light
Look at the depth and crispness of the engraving, and the consistency of the letterforms. Then feel the weight: solid brass has heft, pot metal does not. This is a real marker, but see the limits below.
- 4
Read the date code, or notice its absence
Louis Vuitton used date codes from 1982 until 2021. Chanel used a hologram sticker and serial number from 1986 until 2021. Hermès never used a date code and uses a blind stamp instead. A code that does not match the era of the model is a problem; a missing code on a post-2021 bag is normal.
- 5
Compare the logotype against the brand itself
Letterforms changed over the decades and differ between lines. Compare against the brand's own photograph rather than another listing on the same marketplace.
- 6
Use the price as a check
A Chanel Classic Flap at a few hundred dollars is almost certainly a fake. Rare pieces can be cheap at an estate sale, but that is the exception and it comes with a story.
Date codes, decoded
- Louis Vuitton
- Date codes 1982–2021: two letters for the factory, then digits for month and year. Since 2021 an embedded microchip replaces the code.
- Chanel
- A hologram sticker with a serial number from 1986 to 2021, with a matching card. Since 2021 a metal plate contains a microchip.
- Hermès
- No date code. A blind stamp inside the strap carries a craftsman identifier and a year letter.
- Gucci
- A serial number on the back of the interior leather tag. It identifies the style, not the year.
- Dior
- A small interior leather tab: letters for the factory, then digits for month and year.
- The rule
- A copied code proves nothing. Use it to eliminate, never to confirm.
At a glance: what the codes are and when they stopped
Where each check fails
What each check is worth
| Check | What it can catch | Where it fails |
|---|---|---|
| Stitching consistency | Low and mid-tier fakes, which show uneven spacing and loose threads | High-grade counterfeiters run the same machines and match the stitch counts |
| Hardware weight and engraving | Fakes built from hollow pot metal or stamped with shallow logos | Plenty of genuine bags, especially small leather goods, use light hardware too |
| Date code or hologram | A bag whose code belongs to the wrong era or the wrong model | Codes are copied wholesale, and a repaired bag can lose its own |
| Leather and lining quality | Pleather sold as calfskin, foam-backed fabric sold as suede | A good fake will use genuine leather and a genuine suede lining |
| Price | The majority of counterfeits, because they undercut the market | Estate sales do throw up genuine bargains, usually with a story attached |
What the paperwork is worth
Almost nothing. Receipts have been forged for as long as receipts have existed, dust bags and boxes are sold separately in bulk, and Chanel authenticity cards have been faked for thirty years. A "certificate of authenticity" from a service that only sees photographs is a sales device, not evidence.
What is worth paying for is instrument-based verification. Entrupy uses microscopy and image analysis to compare a bag against a database of known-genuine examples, and specialist authenticators inspect hardware under magnification. On a bag costing thousands, the verification fee is the cheapest part of the transaction. A little house history helps date a bag, too: Louis Vuitton was founded in 1854, and its LV monogram appears on most of its products, so it's the detail to scrutinize hardest.
What to pay, and when to walk
Price benchmarks, fall 2026 (estimates)
| Bag | Retail new | Typical resale | What to pay |
|---|---|---|---|
| Chanel Classic Flap, caviar, black | $10,000+ | $5,000–9,000 | Up to 80% of retail, pre-2015 and unmarked |
| Louis Vuitton monogram Speedy 30 | $1,800 | $600–1,000 | Up to $900, then buy new |
| Prada re-edition nylon bag | $1,800 | $700–1,400 | Up to $1,100 |
| Dior Saddle, revived line | $3,800 | $1,800–3,000 | Up to $2,400 |
| Vintage Gucci bamboo handle | $2,000+ | $300–700 | Up to $600 |
The floor price is a check in itself. Anything well below market has a reason: a repainted corner, a relined interior, a bag recovered after being stolen, or a fake. Ask why it is cheap and expect a specific answer.
Five bags where authentication is worth the fee
Budget for verification on anything over $1,000. Prices are shown only where we confirmed them on the brand or retailer page in Oct 2026.
Best hold valueChanel
Classic Flap, caviar, black
Caviar leather hides wear better than lambskin and holds value more reliably. Prefer gold hardware, and verify the serial number against the hologram.
Search The RealReal
Louis Vuitton
Monogram Speedy 30
The deepest resale market in luxury, which makes this the easiest buy to price accurately. Walk away from any seller calling the monogram leather.
Search eBay
Prada
Re-edition 2005 nylon bag
Demand has been steady since the revival. Nylon cannot be reconditioned, so a scuffed edge is permanent, factor it in rather than planning a repair.
Search Depop
Dior
Saddle bag, revived line
The revival kept prices firm and turnover is quick. Check the strap hardware, which takes the most stress and is the usual repair.
Search Poshmark
Gucci
1990s bamboo handle bag
Vintage Gucci out-resells most of the brand's recent output. The bamboo handle is the risk: inspect it for splits and for an old repair at the joint.
Search Grailed
