Holthinrichs Celebrates 10 Years With The New Signature LAB 1.S & First-Ever 1.GMT
Dutch independent watchmaker Holthinrichs marks its 10th anniversary with the launch of two new limited editions: the Signature LAB 1.S and the Signature LAB 1.GMT. The release not only celebrates a decade of the brand’s evolution but also highlights its signature approach to watchmaking through advanced 3D-printed titanium construction and distinctive architectural design.
Founded by Michiel Holthinrichs, whose journey began with an architecture graduation project, the brand has built a strong identity around combining traditional craftsmanship with cutting-edge manufacturing techniques.
A Sculptural 3D-Printed Titanium Case
Both new models are housed in a 38.50 mm titanium case, produced using the brand’s hallmark 3D metal printing technology. This manufacturing method allows the case to be built layer by layer, enabling complex shapes and structural details that would be difficult to achieve through conventional machining.

The case architecture is one of the standout elements of both watches. Its bold, angular profile is paired with skeletonised lugs, giving the design a lighter and more organic visual presence. The flowing shape of the lugs creates an interesting contrast against the case’s more industrial lines.
Finishing is executed with a mix of bead-blasted and brushed surfaces, further enhancing the texture and depth of the titanium construction.
Handcrafted Patina Dials
The dials continue Holthinrichs’ artistic approach, featuring a domed handcrafted surface with a copper patina finish. The oxidation treatment gives each dial a distinctive appearance, ensuring that every piece carries its own unique character.
Deeply engraved lines extend across the dial, creating a sense of movement and depth.

On the Signature LAB 1.S, these lines radiate outward from the small seconds subdial, a design detail that references the brand’s earliest creation, the Ornament 1, the watch that originated from Holthinrichs’ original project.
The Signature LAB 1.GMT adopts a different layout, with the pattern spreading from the central axis of the hands.
First GMT In The Signature Lab Collection
A key highlight of this anniversary release is the debut of the first GMT complication within the Signature Lab series.

The 1.GMT features a short GMT hand paired with a 24-hour scale marked by Breguet-style numerals, allowing the wearer to track a second time zone. Reinforcing the travel-oriented functionality, the dial also incorporates a world map motif, adding an additional layer of visual identity to the piece.
This complication broadens the practical appeal of the collection while remaining faithful to the brand’s highly artistic design language.
Swiss Automatic Movements
Inside the 1.S is the Sellita SW360 automatic movement, offering a 56-hour power reserve.
The 1.GMT is powered by the Sellita SW330, a proven Swiss automatic calibre equipped with GMT functionality and delivering a 42-hour power reserve.

Both movements are visible through the caseback and feature hand-carved rotors finished with a patina effect, echoing the aesthetic language of the dial.
Limited To 100 Pieces Each
Both anniversary models are released as limited editions of 100 pieces each, reinforcing the exclusivity that defines Holthinrichs’ independent production approach.

The Signature LAB 1.S is priced at € 5,900, while the more technically focused Signature LAB 1.GMT comes in at € 6,500, with both prices listed excluding VAT.
With these two new releases, Holthinrichs continues to showcase its unique blend of architectural inspiration, artisanal finishing, and modern manufacturing innovation, while celebrating a decade of design-led watchmaking.
Read more here.
General Specifications:
Brand: Holthinrichs
Model: Signature LAB 1.S, Signature LAB 1.GMT
Dial: Copper oxide patina
Case Material: 3D-printed Grade 5 titanium with a ceramic bead blasted finish
Case Dimensions: 38.50 mm Diameter, 9.85 mm thickness, 46 mm lug-to-lug
Crystal: Sapphire Glass
Case Back: Sapphire Glass
Strap: Rooster Leg leather strap with a titanium pin buckle
Calibre: Sellita SW360 (Signature LAB 1.S), Sellita SW330 (Signature LAB 1.GMT)
Functions: Hours, minutes, seconds (Signature LAB 1.GMT), small seconds (Signature LAB 1.S), gmt (Signature LAB 1.GMT)
Winding: Automatic
Frequency: 4 Hz (28,800 Vph)
Power Reserve: 56 Hours (Signature LAB 1.S), 42 hours (Signature LAB 1.GMT)
Price: € 5,900 (Signature LAB 1.S), € 6,500 (Signature LAB 1.GMT) plus VAT
Limited Edition: Yes, 100 pieces each
Availability: Now















































