Identify the exact watch first
Record the brand, collection, reference, approximate production period, dial and material variant. Compare the specific generation with official product information, archived catalogs or authoritative reference material. Details such as hand shape, fonts, bezel, bracelet, clasp, case profile and movement can change between years.
Do not assume that one online checklist covers every example. Brands use variations, service parts and regional references; legitimate watches can differ from simplified photographs, while counterfeiters can copy visible details convincingly. Authentication requires context and close inspection.
Treat provenance as a chain of evidence
Ask for a dated sales invoice, seller identity, ownership history, service records and a clear explanation of any replaced parts. Where local law and the brand's practice permit, compare serial and reference markings with documentation—but do not publish sensitive serial numbers or rely on an internet search as proof.
Original box and papers can support a coherent history, but they can be separated from a watch or forged. A watch with no papers is not automatically fake, and a watch with papers is not automatically genuine. Assess whether documents, watch, seller and transaction all make sense together.
Inspect the seller and the transaction
Use a seller with a verifiable business identity, written description, clear return period and a payment method with appropriate protections. Be wary of pressure, implausibly low pricing, refusal to allow inspection, vague stock photographs, mismatched details or requests to move the deal to an unprotected channel.
For private transactions, arrange an in-person examination or a reputable third-party inspection before funds become irreversible. Put the reference, condition, included accessories, known replacement components and return terms in writing.
Use an expert for a high-value purchase
A qualified watchmaker or authentication specialist can inspect movement, case, dial, hands, serial markings, finish and signs of modification. An authorized service center can confirm what it is willing to confirm under its own process, but may not provide a buyer's independent authentication service. Clarify the scope and any limits before sending the watch.
Counterfeit watches change over time, and so do genuine watches after decades of wear and repair. This checklist reduces risk; it does not replace a competent examination of the exact watch. If authenticity remains uncertain, do not buy it.