This is a limited edition built around the least demonstrative material the collection uses, which is an unusual combination and the reason the reference is worth understanding properly. Onyx is a chalcedony chosen for having no pattern at all, and a dial cut from it succeeds or fails entirely on uniformity, since any inclusion, tonal variation or flaw in the polish is visible across an unbroken black field with nothing to hide behind. Selecting material clean enough rejects a great deal before any cutting begins. The case is white gold at 41 mm, and the hour markers are offered in white gold or in brilliant-cut diamonds. Onyx is also softer than most dial minerals and takes its polish differently from a harder stone, which is part of why a properly finished onyx dial has a depth to its black that lacquer cannot reach. Light enters the material slightly before returning rather than reflecting from a coating applied to a surface.
The case is white gold in the Code 11.59 construction, round from above and octagonal through the middle section, with hollowed lugs welded to the case band. The dial is black onyx with a black lacquered inner bezel, so two black surfaces with different finishes meet at the outer edge of the display and the boundary between them is one of the few things the eye has to find. White gold hands cross it. The marker choice is worth pausing on, since offering the same reference with either metal or set markers is not a common arrangement and it means two quite different watches share a reference number. Metal markers keep the dial austere. Diamond markers introduce the only bright element on an otherwise entirely dark watch and change what it is for. The strap is black rubber-coated with a white gold pin buckle. A rubber strap on a limited edition is worth registering as a decision. Limitation usually pushes a specification towards the formal, and fitting rubber instead points the reference at regular wear, which is consistent with a black stone dial that shows handling far less readily than a pale one would.
The function set is hours, minutes and centre seconds, with no date. On a stone dial that absence is structural, since an aperture would require cutting through a brittle mineral and would leave a hard edge in a surface whose whole appeal is continuity. Winding is automatic. The narrowness of the specification is consistent with every stone-dialled reference in the collection and it is the trade the material demands rather than a decision taken independently of it. The centre seconds hand is the only element on the dial that moves, and on a uniform black surface it also serves as the fastest confirmation that the watch is running, which matters on a reference likely to be set aside between wearings.
Three limited references appear across the current Code 11.59 selection and two of them sit in this Selfwinding group at 41 mm, this onyx version and a sodalite version in the same white gold case. That concentration is worth noting, since the collection otherwise applies limitation sparingly. Around them the 41 mm group runs to malachite in yellow gold, a further sodalite reference with a second strap, and three lacquered dials in rose gold, black ceramic and steel. Onyx also appears on a flying tourbillon and on a chronograph elsewhere in the collection, making it the only material used across three different kinds of watch. That breadth is unusual, since most of the stones in the collection are tied to a single reference, and it suggests onyx is treated as a neutral ground that can support any complication rather than as a feature in its own right. That neutrality is exactly why it works under a chronograph, under a tourbillon and here under a time-only movement without ever looking as though it were chosen for the wrong watch. A material that recedes is more useful to a collection than one that dominates, and onyx is the only stone here that can be put behind anything without argument.
The buyer for this reference is choosing severity, and the limitation is what makes that choice defensible rather than merely restrained. A black stone dial in a white gold case with no date and no complication is close to the minimum a watch at this level can offer, and a limited run turns that minimalism into a position rather than an absence. Whether to take the metal or the diamond markers is the real decision, and it is not a small one, since the two versions are read entirely differently at any distance. Collectors who want the dial to be the only thing they notice should take the metal markers. Those who want the watch to register at all from across a room should take the diamonds, since an all-black dial in a white gold case is close to invisible at distance and the markers are the only thing that would change that. Neither version is the compromise. The metal-marker watch is the more coherent object and the diamond-marker watch is the more wearable one, and a buyer who has seen both usually knows within seconds which of those two things they were looking for. The limitation applies to both, so the decision does not affect availability and can be made purely on how the watch should read.
