Hermès makes the most expensive and most counterfeited handbags in the world. A genuine Birkin or Kelly can be worth more than a car; a convincing fake is worthless. Authentication requires examining every element — there is no single shortcut, and no reputable buyer accepts anything less than a comprehensive check.
1. The craftsman stamp
Every Hermès bag is made by a single artisan who stamps their personal mark inside the bag. This stamp — a small letter or symbol inside a shape (circle, square, triangle) — is unique to that craftsman and is one of Hermès’s most powerful authenticity markers. Fakes sometimes attempt craftsman stamps but they’re typically inconsistent or use wrong symbols for the stated year.
2. The date letter system
Hermès stamps a letter indicating the year of production inside the bag, near the craftsman mark. Letters are used in sequence (A, B, C…) then repeated in different shapes (letter in square, letter in circle, etc.):
| Year | Stamp | Year | Stamp |
|---|---|---|---|
| 1945 | A | 2002 | Y |
| 1971 | Z | 2003 | A (in square) |
| 1972 | A (in circle) | 2015 | C (in square) |
| 2000 | X | 2019 | Z (in square) |
| 2001 | W | 2020+ | New system |
A bag dated to a year when a specific leather or hardware wasn’t available is impossible — cross-reference the date letter against known Hermès production records.
3. Hardware
- Weight. Hermès hardware (palladium, gold, or ruthenium plate) is extremely heavy for its size. If the hardware feels light, it’s wrong.
- Engraving. “HERMÈS · PARIS” is engraved on the lock of every Birkin and Kelly — deep, precise, and centered. Fakes often have shallow or off-center engraving.
- Lock and keys. The padlock should have the Hermès engraving; the keys should have the clochette (leather key holder). Lock number on the key tag should match the lock.
- Screws. Hermès hardware is attached with flat-head screws. The screw slots should all be aligned in the same direction (this is an Hermès tradition that craftsmen follow).
4. Leather and stitching
- Hermès uses proprietary leathers — Togo, Clemence, Epsom, Chevre, Box Calf, and others — each with specific texture and feel that experienced handlers recognize immediately
- Saddle stitching (two needles, one thread) is done by hand — the result is perfectly even with slight individual character. Machine stitching is uniform to the point of being mechanical-looking; Hermès stitching has the slight variation of human hands.
- Stitch count is consistent and typically 5 stitches per centimeter on most leathers
A word on Hermès authentication services
For any Hermès bag, professional authentication is essential before purchase. The stakes are too high for self-authentication — fakes have become sophisticated enough that even experienced buyers get burned. Use a reputable service (Entrupy, Real Authentication, or similar) as a minimum for any piece above a few thousand dollars. This guide provides foundational knowledge, not a substitute for professional review.
Value guides: Birkin, Kelly, Constance, and Evelyne.
Educational guide only. Not affiliated with Hermès.