10 min read · Guide
Authentication 101
Luxury handbags are among the most counterfeited goods in the world. Knowing how authentication works — and which platforms protect you — is more important than any specific "tell" you'll read online.
Why brand-level authentication is hard
Hermès, Chanel, and Louis Vuitton do not officially authenticate items they didn't sell. The brands' position is consistent: bring it to a boutique for repair, they'll either accept it (implicit endorsement) or refuse (implicit rejection), but they will not issue a written authentication. Hermès has been known to refuse repair on bags whose papers don't match the bag's actual stamp, which is sometimes used as a signal.
The four pillars of expert authentication
- Stamp & heat-stamp characters. The font geometry, depth, alignment, and serif treatment of brand stamps. Counterfeits get close — they don't get it exact. Hermès uses a specific serif spacing that experts spot in milliseconds.
- Stitching. Hermès Birkins and Kellys are hand-saddle-stitched with a specific angle (~30°), tension, and thread thickness. Machine-stitched fakes can look "perfect," which is itself a tell.
- Hardware composition & finish. Solid palladium-plated brass on real bags has a specific weight and patina trajectory. Fake hardware is often lighter, brighter, and yellows visibly within 12 months.
- Leather grain & tanning. Togo, Epsom, Clemence each have signature grain. Cheap recreations use generic embossed leather that doesn't age the same way.
Authentication services worth using
- Authenticate First. $25-50 per item via photos. Hermès, Chanel, LV, Dior. Issues certificates accepted by major resale platforms.
- Entrupy. Uses AI on microscopic photos. Subscribers (mostly dealers) can authenticate at scale. Their database is one of the largest in the industry.
- Real Authentication. Hand-authentication by ex-Hermès staff. Premium service.
- Bababebi. Hermès-only, run by a long-time community authenticator. Most respected source on the leather/stamp side.
Platform fake rates (Q1 2026)
| Platform | Sampled | Fake rate | Notes |
|---|---|---|---|
| eBay | 12,500 | 14.7% | No house authentication |
| Vestiaire | 8,400 | 2.0% | In-house check |
| The RealReal | 9,300 | 0.77% | House authentication |
| Fashionphile | 6,200 | 0.39% | Hand-inspect each |
| Rebag | 5,100 | 0.35% | Hand-inspect each |
| Yoogi's Closet | 3,800 | 0.29% | Family-run, hand-check |
From our Authentication signals page — aggregated from authentication service reports and our internal price-anomaly detector.
Practical rules
- Below $3k: buy from Fashionphile/Rebag/Yoogi's, accept their authentication.
- $3-10k: same, but also get an independent Authenticate First check before resale.
- Above $10k: only buy from house-authenticators OR established dealers (Madison Avenue Couture, Privé Porter, Bezel verified sellers). Avoid Chrono24 / eBay / unknown Instagram resellers entirely.
- Always keep all packaging, receipts, and authentication certificates. Resale value at the high end depends on them.