How to tell if a designer bag is real before you buy it secondhand

Price is the first and biggest tell

Real Louis Vuitton and Chanel bags hold their value, so the usual lure is a current model far under resale prices. Meta’s buying advice says “Be cautious of listings that are significantly underpriced compared to market value”, and warns that cheap prices are used to sell fake or defective items (Meta).

In fiscal 2025, handbags and wallets were the third most valuable category of counterfeits seized at the US border, at US$978 million in retail value, behind jewelry and watches. The number of goods seized for intellectual property violations more than doubled between fiscal 2021 and 2025 (CBP).

Search the exact model, size, material and colour on eBay with the Sold items filter, then on authenticated resale sites such as Fashionphile, TheRealReal and Rebag. A private seller should come in under a resale shop, since you get no authentication and no returns, but not at half. See how to find a fair price on Marketplace.

Fakes don’t stop at Chanel. Coach, Michael Kors and Kate Spade are copied too, and a $150 tote is easy to pass off because nobody thinks to check it.

What the box, dust bag, card and receipt prove

Very little. In fiscal 2025, US Customs seized 4,206,696 counterfeit packaging items and boxes and 822,653 fake labels and tags (CBP). US federal law names counterfeit hangtags, documentation and packaging in its own trafficking offence (18 U.S.C. § 2320).

A receipt is worth asking for, but read it. The store should exist in that city, the date should fit the year the bag was made, and the price should match what the brand charged then. It can also be real and belong to a different bag that went back to the store. A receipt that fits helps; a missing one proves nothing, since many real bags were gifts.

The photos to ask for before you meet

Ask for these in daylight before you travel:

• Front, back, base and both sides
• The interior heat stamp or “made in” stamp, close up
• The date code, serial sticker or inside tag, if the bag has one
• Engraving on the zip pulls, clasp, feet and any turn-lock
• Stitching where the handles join the body, and the corners
• The lining and the ends of the strap

Ask when and where it was bought. An owner answers fast with fresh photos; resent polished pictures are a reason to stop. Run one photo through a reverse image search, since lifted pictures often turn up on a resale site.

The checks you can do yourself

Pull up an authenticated listing of the same model on your phone and compare side by side:

1. Stitching. Even, straight, the same length along each seam, matching on both sides of a handle tab, in the right thread colour.
2. The heat stamp. Pressed into the leather, crisp and evenly spaced, in the same font as the real one.
3. Hardware. Heavy for its size, with sharp engraving and no plating rubbing off a nearly new bag.
4. Pattern. On logo canvas, the pattern sits centred on each panel and lines up the way the real model does.
5. Edges and leather. Smooth, even edge paint, and a leather smell, not a chemical one.
6. Lining and zips. The right lining for the model, and the brand’s usual zipper maker where it uses one.

These rule out cheap copies, not superfakes: the top tier of counterfeits, copied closely from a real bag with the right leather, stitch counts and engravings.

Date codes, serial stickers and chips, brand by brand

Every brand mark is copied, so use them to check that the details fit the bag’s age (LDJ), never as proof.

Authenticators report that the chips can’t be read by an app or your phone, only by the brand’s own equipment (Lollipuff, LDJ). So a newer Louis Vuitton with no date code isn’t a red flag alone; a date code on a model launched after 2021 is.

Get it authenticated before you pay

For anything you couldn’t afford to lose, pay a professional first. Legit App charges $10 for a luxury result in 4 hours, $15 in 1 hour and $20 in 30 minutes; two or more authenticators review each item and the answer comes back as Authentic or Replica with a free certificate (Legit App). Entrupy’s AI authentication is sold mainly to resellers, pawnshops and marketplaces (Entrupy), so ask a local consignment shop whether they use it and will check a bag you didn’t buy from them. Louis Vuitton and Chanel don’t publish a service for checking secondhand bags, so don’t plan around a boutique visit.

1. Say it up front. Tell the seller you will authenticate before paying. One who backs out has answered for you.
2. Run the cheap tier first on the seller’s close-ups, before you travel.
3. Match the bag in person: the same codes, stamps and wear marks as the photos you sent.
4. Or run it on the spot, with the bag on the table, using the 30-minute tier.
5. Pay only on a clean result, and keep the certificate, the listing and the chat.

Paying and meeting

Meet somewhere public and well lit, such as a safe exchange zone or a café where you can sit while the check runs. Meta tells buyers to inspect items closely in person to make sure they are real, and never to pay in advance (Meta).

Meta’s Purchase Protection covers eligible shipped checkout orders and excludes local pickups and Messenger deals (Meta). Cash, Zelle and e-Transfer are final. In the US, PayPal’s user agreement counts an item “advertised as authentic but is not authentic” as Significantly Not as Described, and an item you pick up after paying with Goods and Services can still be eligible for that claim (PayPal). Friends and Family gets none of that. See Marketplace payment methods and PayPal on Marketplace.

Never send a deposit to hold a bag, and skip a seller who will only ship one and wants payment outside checkout: most shipping scams start that way.

If you already bought a fake

Get a written authentication result and keep the listing, messages and payment record. Ask the seller once for a refund, then report the listing and profile: counterfeits break Meta’s Commerce Policies. If you paid through checkout, file a Purchase Protection claim for an item different than described; with PayPal Goods and Services, open a Significantly Not as Described claim. Paid cash or by transfer? See what to do if you were scammed on Marketplace for reporting in Canada and the US.

Don’t pass it on as real. Knowingly selling goods with a copied registered trademark is an offence under Canada’s Trademarks Act, and trafficking in them is a federal crime in the US.

Where Sift helps

Sift is a free browser extension for Facebook Marketplace: no account, set up in a minute, right in Chrome (and Edge and Brave) on a computer. It clears out the listings that give themselves away and gives you a second opinion on the rest.

• Block words hide listings that use words you pick. For bags, try: replica, rep, dupe, superfake, AAA, inspired, “1:1”, “mirror quality”, “look alike”. Leave out “style”, which plenty of genuine sellers use. More in excluding words on Marketplace.
• Search one model. On “Louis Vuitton Neverfull”, a Below typical or Above typical badge shows how a bag compares with similar listings, and a red Very low price flag marks one far below them.
• One-click links on every listing open Search by image, Sold on eBay and Google Shopping.
• Red chips such as Pay first, Off-site contact and Seller away flag common warning signs: a request for a deposit, a payment that is hard to undo, a push to move the chat off the platform or a seller who is away. The Reposted badge and price history show a bag that keeps returning.
• AI second opinion. Press “Is this a good deal?” on a listing and Sift gives a verdict, such as “Be careful with this one”, the reasons, a fair offer and a message to the seller ready to copy. More in AI second opinion.
• Good signs, such as a receipt or the original box, rest on what the seller says; they aren’t evidence.

A distance limit and hiding shipped and partner listings keep it to bags you can inspect in person. Open a model search and press Watch in Sift, and it lets you know soon after a new one is posted, on your computer or, with Sift Pro, on your phone. See the scam checker and new listing alerts, and for shoes, how to spot fake sneakers.