Cover: The Spider project by Artisans de Genève, based on its client’s Rolex Daytona 116520. The bespoke turquoise dial reveals the skeletonised movement. Illustrative project photograph, not a court exhibit. Photograph: Artisans de Genève.
A customised Rolex begins with a watch somebody owns. What happens next can divide collectors, watchmakers and courts.
Change the strap and the familiar identity remains easy to recognise. Replace the dial, cut away the movement’s bridges, add diamonds or reshape the case, and the answer becomes less comfortable. The watch may contain genuine Rolex components. Its present appearance and construction may owe a great deal to somebody else.
The interesting question is who gets to describe the result, and what the next owner understands they are buying.
Three disputes involving Skeleton Concept, Swiss Wrist and Bijoux Medusa bring that tension into focus. Read alongside the Swiss Artisans de Genève decision, they offer a useful starting point for discussing ownership, originality and the value of a name on a dial.
What makes a customised Rolex a Rolex?
For a collector, several questions can hide inside the word “genuine”. Did Rolex manufacture the original watch? Did it manufacture every component now fitted? Does the watch retain its original configuration? Did Rolex approve the subsequent work?
Those questions deserve separate answers. An original case does not explain the provenance of a replacement dial. A genuine movement does not tell us who set the stones around it. Nor does an attractive finished watch demonstrate the original maker’s approval.
Customisation can have considerable creative merit. A collector might prefer an independent watchmaker’s interpretation to the factory version. But the quality of that work and the accuracy of the description remain separate matters.
This is why the legal discussion centres on trade marks: what the Rolex name identifies, and whether its use can mislead. It is not simply a copyright argument about somebody copying a design.
Artisans de Genève: ownership has room for personal choice
The Swiss Federal Supreme Court’s decision of 19 January 2024, case 4A_171/2023, recognised an important distinction. Customising a customer’s own watch for that customer’s private use was different from acquiring watches, altering them and selling them on.
As VOX Legal’s analysis explains, the court did not accept that owners had to perform all the work personally to benefit from private use. Specialist help could be part of the process. It partially upheld the workshop’s appeal.
That distinction gives the owner of a customised Rolex meaningful space. It does not turn every commercial activity involving an altered watch into the same protected activity. The identity of the owner, the transaction and the intended use all matter.
For collectors, the appeal is understandable. If a watch is a personal possession, there is something compelling about making it more personal. Preserving an object exactly as its maker intended is one form of appreciation. Commissioning a thoughtful transformation is another.
Skeleton Concept: substantial changes, substantial consequences
The French proceedings against Skeleton Concept show why that freedom cannot be reduced to a universal rule.
On 12 February 2025, the Paris Judicial Court ruled against the company over extensively modified Rolex watches. The work included interventions such as cutting movement bridges and altering dials. The court considered that the transformations compromised the trade mark’s function of identifying the product’s origin.
According to lawyer Agathe Zajdela’s account of the judgment, a statement denying a partnership with Rolex did not remove the risk of confusion. The court awarded €600,000 for economic harm, €100,000 for moral harm and €10,000 for unfair competition involving the “Swiss Made” designation.
This was a French judgment on particular facts. It should not be presented as overruling the Swiss court or establishing a worldwide ban.
The practical difficulty is that a disclaimer and a customised Rolex have different lifespans. An explanation might appear beside the original advertisement. Years later, the watch can reach another wrist, another dealer or another sales listing with very little of that explanation attached.
Swiss Wrist: a consent order, not a universal verdict
The American litigation has moved beyond the original complaint. On 8 June 2026, a California federal court entered a consent judgment and permanent injunction involving Rolex and the Swiss Wrist defendants, including SDOT Watches.
The order’s restrictions address a broad range of watches and components, including non-genuine dials and bezels, materially altered parts, stone embellishments and certain uses of Rolex marks.
Its procedural status matters. This is an agreed court order binding the covered parties and persons within its scope. It is not a trial ruling that every owner everywhere loses the right to customise a watch.
For someone buying a customised Rolex, however, it exposes the weakness of relying on a single reassuring phrase. “Genuine Rolex” may leave the most useful questions unanswered. Which parts are genuine? Which have been modified? Who carried out the work?
Bijoux Medusa: the argument is still being contested
In August 2026, reporting described Rolex’s Canadian lawsuit against Bijoux Medusa and its owner, Julien Duguay, over watches customised with diamonds or other stones.
Rolex alleges that the altered watches could be mistaken for products made or authorised by the brand. Bijoux Medusa rejects the allegations and maintains that it sells authentic watches. The Hour Markers’ report sets out those opposing positions.
These allegations must not be treated as established findings. The reported dispute illustrates the disagreement; it does not settle it.
A dealer may regard the watch’s original manufacture as the decisive fact. The brand may focus on the product now being offered under its name. The buyer of a customised Rolex needs to understand both the starting point and the subsequent changes.
That is where “aftermarket” needs explanation. The word identifies work or parts supplied outside the original manufacturer, but it is too broad to describe every possible intervention on its own.
What the next owner needs to know
Our view is that the discussion becomes more useful when it follows the watch into its next transaction. Taste can remain subjective. Its description should be specific.
Before buying a customised Rolex, the questions worth asking are straightforward:
- What changed? Ask for an itemised account of replaced or altered components, including the dial, bezel, case, bracelet and movement.
- Who did the work? Look for invoices, workshop identification and a description of the processes used.
- What do the papers establish? Original sales papers describe the watch’s history. They should not be treated as documentation of every later alteration.
- Who will support it? Obtain written details of the current warranty and servicing arrangements, including what happens if a bespoke part needs replacing.
- What travels with the watch? Keep the modification record, photographs and any retained original components together for the next owner.
Our Rolex serial number and year finder can help establish an approximate production period for suitable serials. It cannot authenticate a watch or establish whether its present configuration is original.
The same care should apply to value. The amount spent on personalisation is a cost, not a promise about a future sale price. The next collector may admire exactly those changes, or prefer the watch as it left the factory.
A name can outlive the explanation
There is a connection with our examination of Swatch v Samsung and the value of a watch face. In that dispute, watchmaking identities appeared in digital apps. Here, an existing physical watch is transformed.
The activities and legal questions differ, but both invite us to look closely at what a familiar name communicates. A logo can carry an implication of authorship even when another business has supplied much of the finished experience.
So when does a customised Rolex stop being a Rolex? There is no single answer that serves the watchmaker, the court and the collector equally well.
The most useful description preserves both authorships: the manufacturer of the original watch and the specialist responsible for its transformation. It tells the next owner what survives, what changed and who stands behind the result.
A watch can become more personal without becoming less interesting. It should not become harder to describe honestly.
Case reporting reviewed on 21 September 2026. The disputes concern different jurisdictions and procedural stages; they do not establish one international rule.
About the author
Isaac Kaufman covers the business and culture of watchmaking for Watch & Bullion, exploring how technology, ownership and design shape the industry.
