05/12/2026
The STARMARK dial was developed specifically for the Dubois Dépraz DD9231 moonphase module mounted to the Sellita SW300 base movement. Its architecture is not decorative first; it begins with the mechanics beneath it.
The module determines the essential layout: the moonphase aperture is positioned in the upper-left quadrant, while the 31-day calendar display is placed at 6 o’clock. Rather than disguise this asymmetry, Towson Watch Company used it as the foundation of the design.
The dial itself was custom-produced from brass, with a galvano black surface, white printing, and rhodium appliqués. Its broad oval form measures 33.6 mm across, with a visible diameter of approximately 32.6 mm and a dial thickness of 0.40 mm for proper clearance beneath the handset and case architecture.
At the upper left, the moonphase aperture is shaped and framed rather than simply cut open. Opposite it, the observatory dial field carries the TWC shield, balancing the moonphase visually and giving the brand mark a structural role within the composition. At 6 o’clock, the calendar register completes the technical triangle of the dial.
The applied rhodium stars serve as the hour markers. They are not ornament placed over the design; they are the design’s functional indices. They mark time, extend the moonphase theme across the full surface, and give the STARMARK its identity with restraint.
Dedicated tooling was created for this dial, including a printing cliché, turning tool, and appliqué setup. The result is a purpose-built dial: black galvanic surface, white graphic precision, rhodium accents, and a layout shaped by the movement itself.
The STARMARK dial is a study in controlled asymmetry — a moonphase display organized through material, function, and authorship.
