What the aisle actually gives you
Two minutes, overhead fluorescent light, no loupe, nothing to compare against, and somebody else circling. Every authentication guide written for a desk assumes conditions you do not have. What works in a shop is a short, ordered list of checks that are fast, physical and expensive to fake.
The order matters more than the length of the list. Counterfeiters spend their budget where buyers look first, which for thirty years has meant logos, stamps and date codes. They spend almost nothing where the cost is structural. Check the structural things first and you will be right more often, in less time.
Pick it up before you look at it
Weight is the first check and it takes a second. Hardware on a luxury bag is solid, plated and heavy; counterfeit hardware is usually a light alloy or a hollow casting, and the difference registers in the hand even if you have never held the genuine article. A lock, a zip pull or a chain that feels like a toy ends the examination there.
Then smell it. Full-grain and vegetable-tanned leather smells of leather; the glue-and-chemical smell that comes off many counterfeits is the residue of the adhesives used in place of stitching. It is a crude test and it is remarkably reliable in a shop.
Then the stitching
Count the stitches along a panel, then along the panel that mirrors it. Genuine production runs a consistent stitch count on matching panels because the pattern is cut and sewn to specification; counterfeit production runs whatever the machine happens to do. Even, dense, slightly angled stitching is expensive to reproduce and is the commonest place a good fake gives itself up.
Look for loose threads, stitches doubled back, and any line that wanders at a corner. Then read the edges: where a house paints or turns an edge, the finish should be even along its whole length, with no build-up where it terminates.
Then the pattern across the seams
On a patterned canvas or a quilted leather, the pattern has to survive the seams. Chanel matches its quilting so the diamonds continue across the joins, including on the back and the flap. Louis Vuitton runs its monogram symmetrically and does not cut a motif where the house would not cut one.
Matching a pattern across a seam wastes material, so it is expensive to do and cheap to skip — and it gets skipped constantly. Turn the bag over. The back is where a counterfeiter economises, because the buyer is looking at the front.
Only then the stamps and the codes
Now look at the interior stamp: struck into the leather at even depth, consistent letter spacing, correct wording for the era. Foiling on a genuine stamp wears; on many counterfeits it flakes or sits on top of the leather like ink. A stamp that is printed rather than impressed is close to decisive on its own.
Date codes and serials come last and carry the least weight. A code that reads correctly tells you the forger did their homework. A code in the wrong format for the bag's apparent era tells you a great deal more. And Louis Vuitton stopped using date codes in March 2021, so their absence on a recent bag means nothing at all.
- Hardware engraving: struck rather than etched, even depth, correct weight of letter.
- Zips: on most houses the maker's name is on the underside of the pull.
- Lining: the material that house used for that era, not a generic satin.
- Feet, where the model has them: seated flush, with no adhesive squeezed out around the base.
Read the price tag as evidence
A charity or thrift shop that has priced a bag in four figures has already sent it to somebody for an opinion. The genuine finds are almost always the ones priced as an ordinary handbag by a volunteer who did not recognise the name — which makes an eight-pound tag a better sign than a two-hundred-pound one.
It cuts the other way too. A shop that specialises in designer resale is pricing on an opinion it has formed, and that opinion is worth something. It is still an opinion, and it is not a guarantee. Ask what the authentication was and who carried it out.
Photograph it before you decide
This is the part of the process a phone genuinely helps with. A single capture of the whole bag will name the likely model and give a value band, and the band is the number you actually need in the aisle — not what the bag retailed at, but what its kind resells for. The Lovenhall Bag Identifier does that from one photograph, free, and it takes less time than finding the price tag.
Photograph the interior stamp and the hardware as well, even if you walk away. A picture you can study in daylight is worth far more than two minutes under a fluorescent tube, and it costs nothing to take.
If you buy it
Do not clean it, do not condition it and do not have anything repaired before somebody has looked at it properly. Then decide what the bag is for. If you are keeping it, a specialist clean is worth the money and a general one is not. If you are selling it as genuine, pay for a proper authentication first — the platforms run their own, and a rejected listing costs more than the fee did.
Then work out what you will net, which is not the sale price. Luxury consignment commonly takes twenty to forty percent, peer-to-peer twelve to twenty-five, and a dealer buying outright sits well below both. On a bag that cost eight pounds every one of those is a good outcome; on a bag that cost four hundred, the channel decides whether it was worth doing at all.