Our blind stamp decoder maps every year code Hermès has used since the 1940s. This guide is the practical follow-up: not what the codes mean, but how to tell whether the stamp in front of you was actually made the way Hermès makes one — because that distinction is where counterfeiters most often fail, even on otherwise convincing bags.
How a Genuine Stamp Is Applied
A genuine Hermès blind stamp is heat-pressed directly into the leather using a die, under controlled temperature and pressure — the same general family of process as the exterior “HERMÈS PARIS MADE IN FRANCE” heat stamp, but applied without ink or foil, which is why it is called “blind.” That process leaves physical evidence in the leather itself: consistent depth across every letter, slightly compressed and rounded edges where the die met the surface, and an even pressure gradient rather than sharp, uniform digital-looking lines.
This matters because it is genuinely difficult to reproduce at scale without the original tooling. A counterfeiter can copy the shape of a letter from a photograph far more easily than they can replicate the exact depth, pressure and edge compression that decades of proprietary die-and-press equipment produces. That gap — between what is visible in a photo and what only shows up on the physical leather — is where most fake stamps eventually fail under close inspection.
Failure Modes Table
Six specific ways fake blind stamps commonly fail, what to check for each, and how much weight to give that check on its own. None of these is definitive in isolation — see the caveat below — but each narrows the picture.
| Failure Mode | What to Look For | Confidence |
|---|---|---|
| Too shallow / laser-etched flatness | Genuine stamps are heat-pressed into the leather, so the letterforms have real depth and slightly rounded, compressed edges. A stamp that looks printed onto the surface, or is perfectly flat with sharp digital-looking edges, is consistent with laser etching rather than heat pressing. | High |
| Wrong font weight | Hermès uses a specific, consistent letterform for its blind stamps. Letters that read noticeably bolder, thinner, or use different proportions than the reference alphabet for that era are a strong tell — compare directly against a confirmed reference, not memory. | High |
| Incorrect letter for the claimed year | Cross-reference the stamped letter against the seller's claimed production year using a reliable year chart. A mismatch is close to definitive — but only if the chart you are checking against is itself accurate for that era. | High |
| Wrong placement for the model or era | Stamp position is remarkably consistent within a given model line — interior strap, back wall, or pocket area depending on the bag. A stamp in an atypical location for that model is a red flag, though placement conventions have shifted across decades, so confirm against era-appropriate references. | Medium-High |
| Inconsistent stamp vs. hardware-adjacent details | The date stamp's apparent age and quality should match the quality of nearby hardware-area craftsmanship — engraving crispness, hardware wear pattern, stitching around the same panel. A crisp, seemingly recent stamp paired with hardware or stitching quality inconsistent with that era is a signal worth investigating further. | Medium |
| Stamp on the wrong leather side or panel | The stamp should sit on the correct interior panel and the correct side of the leather (grain side, not the flesh/suede side) for that model. A stamp on an unusual panel, or one that appears to have been pressed into the wrong leather surface, points to a copyist working from limited reference photos. | Medium-High |
Why Post-2015 Standalone Letters Are the Most-Faked Era
As our blind stamp decoder explains, Hermès moved to a standalone-letter system from 2015 onward that is non-sequential and reuses earlier letters without an enclosing shape. That non-sequential, reused-letter pattern is exactly what makes this era attractive to counterfeiters targeting recent bags: there is no simple alphabetical rule a buyer can mentally check the way earlier eras allowed, which means a wrong or invented letter is less likely to be caught by casual inspection.
It is also, unsurprisingly, the era counterfeiters most want to fake, because the bags being copied are current production — the highest-volume, highest-demand segment of the market. The combination of high fake volume and a code system that resists casual memorisation means post-2015 stamps deserve a direct cross-check against a reliable year chart every time, rather than relying on general familiarity with “what a Hermès stamp looks like.”
How to Photograph a Stamp for Verification
If you are asking a specialist, a dealer, or our own authentication service to assess a stamp remotely before an in-person inspection, the quality of the photo matters as much as the stamp itself.
Raking light
Light the stamp from a low, near-horizontal angle rather than straight on. This casts shadows across the letterform's depth and edges, revealing whether the stamp has real physical relief or is flat — exactly the detail a straight-on, evenly lit photo hides.
Macro close-up
Get close enough that individual letters fill a meaningful part of the frame, in sharp focus. A blurry, distant photo of the whole interior panel is close to useless for checking font weight or edge quality.
Multiple angles
Take several shots — straight-on for legibility, angled for depth, and a wider shot showing the stamp's position relative to the strap attachment or panel seam, to check placement as well as the letterforms themselves.
A seller who resists providing this kind of detailed photo, or who only offers a single distant, evenly lit shot, is itself a pattern worth noting alongside the stamp evaluation — the same behavioural signal covered in our superfake red-flags guide.
The Crucial Caveat: A Correct Stamp Alone Proves Nothing
Every check on this page can be defeated by a sufficiently skilled counterfeit workshop, and the best current fakes — sometimes called superfakes — are specifically built to pass a stamp inspection along with everything else. A blind stamp that looks correct on depth, font, year code, and placement is a good sign, not a verdict. It should always be weighed alongside construction quality, stitching, hardware, leather smell and documentation, not treated as a standalone proof point.
This is especially true for vintage pieces, where stamp conventions themselves shifted across eras and genuine variation can be mistaken for a fault by an inexperienced eye — our vintage authentication guide covers exactly where those genuine differences lie. When a stamp check raises any doubt, or when the purchase is significant, a full physical authentication remains the only reliable answer.
Not Sure About a Stamp?
Our authentication team checks the blind stamp alongside construction, hardware and documentation — full report, same-week turnaround.