Posts tagged #gold

Arnold & Son Ultrathin Tourbillon Onyx: When 2.97mm of Movement Meets Pure Black Stone

Arnold & Son releases the Ultrathin Tourbillon Onyx Edition ahead of Watches & Wonders 2026 — 8 pieces per metal, a 2.97mm in-house calibre, and 100 hours of power reserve. Here's why this is the most underrated tourbillon of the year.