This special edition has sold out. Hit REQUEST MORE INFO if you would like to be notified of future special edition releases. Sartory Billard SB04-E TANTOSTER marks a groundbreaking collaboration between Oster Jewelers and Sartory Billard, produced in an exclusive 10-piece edition that celebrates the artistry of fine watchmaking. For the first time in a production series, tantalum meets the intricate craft of guilloché, resulting in a mesmerizing dial adorned with the traditional "grand panier" basket-weave motif, a pattern deeply rooted in horological history. Every glance reveals a dynamic interplay of light across its surface, with tones shifting and textures evolving as the watch moves on the wrist, creating a sense of depth and vitality rarely seen in modern timepieces. Delivery Mid-November 2025Ref. SB04-E TANTOSTER Encircled by a tantalum bezel featuring a fumé sunburst finish, the dial showcases stunning detail, from its sapphire disk with diamond-polished chamfered edges to its luminous Super-LumiNova® BGW9 accents. Even-numbered diamond-cut markers contrast elegantly with the signature Y-shaped indices inspired by the Eiffel Tower, a nod to Sartory Billard’s Parisian heritage. Crafted for true connoisseurs, this rare creation stands as the world’s first tantalum guilloché watch series, a fusion of technical mastery, material innovation, and refined elegance available exclusively through Oster Jewelers. TECHNICAL SPECIFICATIONSCalibre- La Joux-Perret G101- Tungsten rotor winding mechanism- 26 mm diameter- 4.45 heightFunctionsHours, minutes, secondsPower reserve68 hoursJewels24Frequency4 HzCase316L Steel with alternating polished and brushed surfacesMeasurements- 39.5 mm diameter- 10.3 mm thickness- 46mm lug-to-lugWater resistance100 metersDialTantalum dial guilloché with the traditional "grand panier" motifStrap- Scarlet Paris leather strap in Olive green with mustard lining- Sartory Billard grey rubber strap with the logo buckleWant to learn more about the brand behind TANTOSTER. Listen to Keeping Time with Oster Watches Podcast featuring Armand Billard. Founder of Sartory-Billard Watches. Oster Jewelers is Your Authorized Sartory Billard Retail Partner
