SB04 x Horophile Purple Dial

Sartory-Billard x Horophile SB04 is a highly distinctive limited-edition independent watch created in collaboration with collector Amr Sindi, better known as Horophile. Produced in only 20 pieces, the edition captures Sartory-Billard’s bespoke-focused approach, combining refined case architecture with a striking purple dial execution. The 40 mm titanium case has a sand-blasted finish, giving the watch a lightweight and modern wrist presence, while the slim 11.5 mm profile keeps it elegant and wearable. Its construction reflects the SB04’s clean, architectural design language, with a focus on texture, proportion and personalisation.

The standout feature is the flame-blued titanium dial, heat-treated until it develops a vivid purple tone, then polished to create a highly reflective surface. This gives each piece strong visual depth and individuality, making the dial the centre of the watch’s character. Power comes from the automatic STP3/13 calibre, providing reliable everyday mechanical performance. The watch is paired with a leather strap and was originally supplied with box and papers. As a limited collaboration between Sartory-Billard and Horophile, this SB04 offers a rare combination of independent watchmaking, collector-led design and highly expressive dial craftsmanship.