How to authenticate a Chanel bag.

The serial sticker (and why it disappeared)

From the mid-1980s until early 2021, Chanel placed a serial number sticker inside each bag — usually on the interior lining near the bottom. The number of digits tracks the era: 6 digits in the late 1980s, 7 digits from roughly 1986 to 2004, and 8 digits from 2005 to 2021. The first one or two digits indicate the production period, so the number should match the style's actual production years.

In spring 2021, Chanel retired the sticker entirely and moved to a stamped metal plate with an embedded microchip. So: a bag in a post-2021 style with a paper sticker is wrong, and a 1990s bag with a metal plate is wrong.

The classic sticker has specific security features — a transparent overlay with an X-cut pattern that shreds if peeled, gold speckles in the film, and a faint Chanel logo watermark. A pristine, easily-peelable sticker on a heavily used vintage bag deserves suspicion. Note the reverse too: many authentic vintage bags have lost their sticker to wear, which is why the sticker alone never settles the question.

The authenticity card that comes with the bag should show the same number as the sticker or plate. A card with gold borders and no hologram feel, or a mismatched number, is a red flag — but remember cards are the easiest element to counterfeit.

Quilting alignment — the fastest visual check

Chanel's diamond quilting is cut so the pattern lines up across seams, pockets, and the flap. Look at the back pocket of a Classic Flap: the diamonds on the pocket should continue the lines of the diamonds on the body almost seamlessly. Fakes routinely fail this because pattern-matching wastes leather.

The quilting should also be plump. Chanel uses generous padding, so the diamonds have a soft, pillowy height — flat, deflated-looking quilting on a supposedly lightly-used bag suggests either a fake or heavy wear being undersold.

Stitch density

Authentic Chanel stitching is unusually dense — as a rule of thumb, expect roughly ten or more stitches per inch along the quilting. Counterfeiters use fewer, larger stitches to save time, which also makes the diamonds look slightly flatter and the lines less crisp. Count stitches along one diamond edge: consistently low counts are one of the most reliable tells on quilted styles.

Hardware: the CC lock and the screws

• On the CC turnlock, the two Cs interlock with deliberate symmetry — one C crosses over its pair at the top and under at the bottom. Sloppy overlap, uneven thickness, or Cs that don't quite meet the way they should are red flags.

• Screws. Chanel uses specific screw types on the back plate of the CC lock — flat-head slotted or star-shaped depending on era, never a generic Phillips cross-head on classic styles.

• Weight and finish. Chain straps and hardware are heavy, with even plating. Chanel's leather-woven chain should have supple, evenly cut leather threaded through solid links.

• Engraving. Stamps like "CHANEL" and "Made in France/Italy" on hardware are crisp and shallow with even letter spacing.

Leather, lambskin, and caviar

Chanel's caviar leather has a pebbled texture that is firm but never plasticky, with grains that vary naturally rather than repeating a mold pattern. Lambskin is buttery and smooth, showing a soft sheen rather than glassy shine. Interior lining should be neatly fitted with tight, even stitching — bunched or wavy lining is a common fake giveaway.

The bottom line

Chanel is one of the brands where we most strongly recommend buying only from sellers with technology-backed authentication and a money-back guarantee. Every eligible Chanel piece at Gaby's Bags is verified with Entrupy's microscopic AI imaging before listing, and photographed exactly as it is — including the serial sticker or plate when present.

Keep reading.

• Is Entrupy authentication legit? →
• The smart buyer's guide to pre-loved designer bags →
• Our authentication process →