A convincing detail is not an authenticated bag. A date letter can be copied, genuine packaging can accompany another object, and real leather does not establish who made it. A considered assessment compares the whole construction with documented examples of the same model, material and period.

This guide explains what to document and which shortcuts to avoid. Authentication asks whether the object is what it claims to be; condition describes its present state; provenance concerns its history. These questions inform one another without being interchangeable.

Begin with a complete object record

Request unfiltered photographs of the front, back, sides, base, interior, handle attachments, closure, hardware engravings and all visible marks. Photograph each mark with enough surrounding leather to show its location. Record model, nominal size, measurements, construction, named materials, color, hardware, date attribution and included accessories.

Save the listing and available invoices or service documents. A receipt helps only when it can be connected to the object; paperwork and bags can become separated. Where a seller cannot supply essential information, the question remains unresolved regardless of the asking price.

Leather and surface

Identify the material before judging grain, softness, sheen or age. A natural grain and a deliberately printed grain are both legitimate finishes. Color and surface appearance can change through lighting, use, cleaning or recoloring, so compare several views in consistent light.

Smell, softness, visible veins and nap density do not establish the maker. Do not scratch, wet, rub or chemically test the bag. For named surfaces and introduction records, use the Leather Reference.

Stitching and construction

Examine how panels meet, seams turn, handles attach and edges are finished. Compare the same component of the same format: a lining seam is not a handle seam, and a Sellier construction is not a Retourne. Material thickness, seam function and previous repairs belong in the comparison.

Do not apply a universal 45-degree stitch angle, fixed 3–4 mm spacing or one thread specification to every seam. Regular stitches do not prove machine manufacture, and uneven stitches do not prove handwork or authenticity. Loose thread may be a condition or repair issue as well as a construction concern.

Look closely at the handle bases, corners, sangle attachments and interior. Record stress, distortion and any difference between components without turning the observation into a diagnosis before comparing appropriate references.

Brand signatures, date codes and other marks

Separate the Hermès brand signature from the year code, workshop or artisan codes, material symbols and any Special Order mark. They need not share a location. Compare typography, arrangement, position and impression with the relevant model and production period.

Wear and the material's surface can change legibility. A faint, deep or uneven impression is not by itself decisive, while a crisp one is not proof. An unreadable mark should be recorded as unreadable rather than reconstructed from the expected date.

The Date Stamp Reference gives the year-by-year chart, the 2014 transition and the source limit on the reported 2026 G. A production year may differ from a later purchase or resale invoice; that difference alone is not a contradiction.

Special Order and material marks

A genuine horseshoe supplies Special Order context, not the complete order specification or a guarantee of value. Artisan-related shooting-star marks and later decorative stars on clochettes should be distinguished. The location and object record matter.

Material symbols also require precise reading: the conventional caret identifies Porosus crocodile; two dots identify Niloticus crocodile; an empty square identifies American alligator. Lizard references distinguish the dash associated with Niloticus from the equals sign associated with Salvator. A symbol is supporting evidence, not a species test or authentication result by itself.

Hardware, locks, keys and zips

Record the finish, engravings, attachments, mechanism and signs of replacement. A gold-colored finish does not establish solid gold or the underlying alloy. Exceptional diamond-set components have their own specifications; neither their weight nor their sparkle authenticates them.

Inspect the turn-lock, plates, feet and attachments for wear, movement, coating loss and repair. A loose fitting can be a condition problem. A particular screw, rivet shape or engraving layout should be compared with the actual model and era, not used as a universal rule for every Hermès bag.

Lock and clochette

Check that the supplied keys operate the lock and record their marks. Replaced or mismatched accessories raise questions about completeness and history; they do not decide the entire bag's authenticity. The clochette is a leather key cover, separate from the padlock. Its construction and material should be assessed for that format, rather than requiring one universal pattern.

Zipper

Examine the pull, teeth, slider, attachments and operation in context. Do not require one supplier mark, one pull orientation or one finish across every period. A damaged or replaced zip needs disclosure and an appropriate comparison. Do not force a stiff mechanism.

The Hardware Guide distinguishes finish descriptions, material composition and documented special treatments.

Exotic skins

Identifying a real animal skin and establishing that Hermès made the bag are different tasks. Genuine crocodile, alligator, lizard or ostrich can be used by another maker. Embossed leather can also have relief; the claim that every imitation is flat under angled light is not a reliable test.

Assess the documented skin, finish, cut and overall construction together. Scale size, pores, quill follicles, gradient regularity or a color's apparent depth cannot settle authorship. Photographs may also be insufficient for a confident species identification or an assessment of surface treatment.

CITES documentation serves a different purpose from authentication. Before international movement, establish the requirements for the particular skin, route and transaction; a historic document is not automatically sufficient for a new shipment. See Hermès' precious-material guidance.

Dust bags, packaging and paperwork

Evaluate the bag independently of its packaging. Boxes, dust bags and documents can be replaced, copied or paired with unrelated objects. Printed branding is not an automatic failure, and no single color, textile weight or embroidered logo can serve as a universal packaging rule.

Identify the issuer and purpose of each card or document. A leather-care card, a third-party authentication report and an original invoice are different records. Do not describe a seller's report as an Hermès authentication card, or reject a bag merely because a third party has supplied a card.

List accessories individually, distinguishing original components from replacements where known. A vintage Kelly, a Mini II, a Pochette and a Birkin need not have the same original packing list. Missing accessories affect completeness; they are not a stand-alone verdict.

A practical assessment checklist

Repairs, modifications and professional review

An authentic base bag can carry later alterations. Record who performed any recoloring, hardware work, handle replacement or embellishment, and retain the available documentation. A modification should not be presented as an original Hermès edition.

Photographic review can leave important questions unresolved. A useful independent opinion identifies the object, evidence considered and limits of the assessment. There is no price band in which a superficial check becomes sufficient, or a higher-price threshold below which uncertainty can safely be ignored.