Circula Facet Guilloche

Circula celebrates its seventieth year in operation by releasing a highly restricted run of its sports watch platform, modifying the standard production model with a hand turned dial. Founded in nineteen fifty five by Heinz Huber, the Pforzheim based manufacturer typically focuses on robust tool watches utilizing standard Swiss calibers. Producing only seven units, the new release serves as a physical demonstration of traditional German craft merging with modern Swiss engineering. Collaborating with independent artisan Jochen Benzinger, the brand replaces the standard brass dial with a solid sterling silver plate modified on a century old manual machine. Integrating the design language established by former TAG Heuer creative director Guy Bove, the architectural case provides a severe, industrial contrast to the organic waves cut into the silver face. Manufacturing highly limited pieces allows the independent brand to experiment with production techniques that cannot scale to their standard catalog.

Operating out of the historical center of the German jewelry and watchmaking industry, the manufacturer roots the visual aesthetic of the component design in local geography. Creating a mechanical watch with a hand turned dial at the sub ten thousand market level disrupts the standard market positioning where such artisanal techniques are normally reserved for high horology pieces costing multiples more. Standard stamping methods can replicate the visual appearance of engine turning, but they fail to capture the sharp facets and brilliant light play achieved by a physical cutting tool shearing away ribbons of metal. Collectors often seek out these hand cut dials because the slight imperfections and variations in pressure from the artisan make each piece a unique physical artifact. Transitioning from their standard utilitarian divers to a reference featuring pure artisanal craft indicates a clear structural shift in brand catalog positioning within the enthusiast community.

The Case and Dial

Measuring thirty eight millimeters in diameter with a compact lug to lug distance of forty four point five millimeters, the stainless steel case relies on sharp geometry rather than sweeping curves. Fabricated from standard 316L stainless steel, the alloy offers excellent corrosion resistance and an easily refinished surface compared to harder but more brittle metals. Machining the case to achieve the sharp transitions between the brushed flat surfaces and the polished chamfers requires precise tooling and slower milling speeds to prevent heat distortion in the metal. Evaluating the bezel reveals a horizontal brushing pattern on the top surface that abruptly transitions to a high polish on the angled outer edge, a finishing technique that reduces visual mass and minimizes direct light reflection. Measuring just nine point nine millimeters thick, the profile slides easily under a cuff while maintaining a ten atmosphere water resistance rating suitable for surface swimming. Utilizing a flat sapphire crystal treated with three layers of anti reflective coating on the interior surface prevents the milky visual distortion often seen on highly domed vintage style crystals.

Examining the dial under magnification reveals the deep, rhythmic cuts of the engine turned pattern executed by Benzinger. Utilizing solid sterling silver as the base material provides the ideal balance of softness for the cutting tool and structural rigidity for the dial feet, as standard brass can sometimes chip under the graver. Operating a manual rose engine from the year nineteen hundred requires the artisan to guide the cutting tool by hand, controlling the depth and consistency of each line through tactile feedback and visual inspection. Rotating the work piece against specialized cams dictates the specific geometric path the cutting tool follows across the silver blank. Cutting the specific moire pattern chosen for the edition creates an optical illusion of intersecting waves, visually referencing the Enz, Nagold, and Wurm rivers converging in Pforzheim. Radiating outward from the center, the curved lines warp and bend around the applied indices, drawing the eye toward the date window positioned at six o'clock.

Legibility remains a priority despite the complex background texture, achieved through the application of dark gun plated hands and indices. Featuring a six sided profile, the baton hands mirror the geometric facets of the exterior case and catch ambient light from multiple angles, ensuring contrast against the bright silver dial. Filling the center channels of the hands and the applied hour markers with BGW9 Super-LumiNova ensures strong low light visibility. Formulated from strontium aluminate, the specific luminous compound appears stark white in daylight but emits a bright blue glow after exposure to ultraviolet light, lasting significantly longer than older zinc sulfide based paints. Designing custom numerals for the minute track further integrates the dial with the angular case architecture, stepping away from standard catalog typefaces. Framing the date window with a subtle stepped border integrates the complication without disrupting the engine turned waves flowing around it, while the color matched date wheel prevents visual jarring.

The Movement

Powering the time and date functions is the Swiss made La Joux-Perret G100 automatic caliber, presented here in the upgraded Soigne grade. Engineered as a dimensional alternative to the ubiquitous ETA 2824, the G100 architecture features a completely redesigned mainspring barrel capable of storing sixty eight hours of power. Enlarging the mainspring barrel within the same dimensional footprint requires optimizing the gear train layout, allowing the watch to run for nearly three days on a single full wind. Operating at a standard frequency of twenty eight thousand eight hundred vibrations per hour, or four hertz, the balance wheel provides a smooth sweep of the seconds hand and stable chronometric performance across various physical positions. Incorporating a hacking mechanism stops the balance wheel entirely when the crown is pulled to the outermost position, allowing for precise synchronization with a reference time signal. Regulating the movement in their Pforzheim facility, the brand guarantees an accuracy tolerance of minus five to plus seven seconds per day, keeping it well within expected mechanical parameters.

Viewing the caliber through the quadruple screwed sapphire exhibition caseback exposes a respectable level of industrial decoration and material upgrades. Machining a skeletonized rotor from tungsten dramatically increases the winding efficiency of the automatic module, as the heavy metal provides superior mass compared to a standard brass or steel oscillating weight. Coating the dense tungsten rotor in palladium provides a bright white, tarnish resistant finish that contrasts effectively with the heat blued screws securing the bridges, while vertical stripes add visual depth to the spinning component. Applying a circular graining pattern, known in the industry as perlage, across the base plates adds visual texture that catches the light as the watch changes position. Utilizing the KIF Parechoc system instead of the more common Incabloc provides reliable shock protection, utilizing a specific spring shape to absorb lateral and vertical impacts to the delicate balance staff pivots. Stamping the caseback ring with the limitation number confirms the specific sequence within the incredibly short production run.

The Strap

Securing the watch to the wrist involves a highly engineered integrated stainless steel bracelet featuring solid links and a heavy taper toward the clasp. Integrating the end links directly into the case architecture eliminates the visual gap between the strap and the watch head, creating a continuous band of brushed steel. Screwed link pins provide superior security compared to standard friction pins, ensuring the bracelet will not separate under lateral tension or heavy use. Manufacturing the links with brushed top surfaces and polished side bevels perfectly matches the finishing techniques applied to the main case body, maintaining visual continuity.

Operating the milled safety clasp reveals a tool free micro adjustment mechanism hidden within the folding hardware assembly. Incorporating the sliding adjust system allows the wearer to expand or contract the bracelet length by several millimeters on the fly to accommodate wrist swelling caused by temperature fluctuations. Releasing the bracelet is accomplished quickly via the integrated quick release spring bars, requiring no specialized spring bar tools that might scratch the lugs. Packaging the watch with an additional grey suede leather strap provides an alternative wearing experience that significantly reduces the overall weight to ninety five grams and alters the visual presence for less formal environments.

Pricing and Availability

Allocating production for the anniversary configuration is strictly limited to seven individual units worldwide due to the intensive labor required for the dials. Pricing for the model is set at five thousand three hundred and forty EUR, which includes standard domestic taxes for the European market. Distributing the watches directly to consumers through their proprietary online platform eliminates traditional retail markup margins and maintains tight control over the final point of sale logistics.

Launching officially in late February of twenty twenty six, the short production run guarantees the model will remain an obscure reference within the broader brand catalog. Delivering the complete package with both the steel bracelet and the suede strap provides the buyer with immediate versatility right out of the box without requiring secondary purchases.

Technical Specifications

Case: 38mm diameter, 44.5mm lug-to-lug, 9.9mm thickness, 316L stainless steel, brushed and polished surfaces, sapphire crystal with triple interior anti-reflective coating, sapphire exhibition caseback, 10 ATM water resistance

Movement: La Joux-Perret G100 Soigne grade, automatic, 28,800 vph (4Hz), 24 jewels, 68-hour power reserve, hacking seconds, palladium-coated tungsten rotor, KIF Parechoc shock protection

Dial: Solid sterling silver, hand-guilloche moire pattern by Jochen Benzinger, petrol grey finish, applied dark-coated faceted indices, BGW9 Super-LumiNova

Strap: Integrated stainless steel bracelet with screwed links, tool-free micro-adjustment folding clasp, additional grey suede leather strap with quick-release pins

Price: 5,340 EUR

Reference Number: Facet Guilloche LE

Notes: Limited edition of 7 pieces worldwide, created for the 70th anniversary of the brand