Artisan "Master Squelette" Chronograph: Kurt Schaffo Attribution

Featuring the Valjoux 23SZ — The Engine of the "Holy Trinity" This 18kt yellow gold masterpiece represents the absolute apex of 1980s Swiss independent watchmaking. While unbranded on the dial, every millimeter of this watch speaks the design language of the Kurt Schaffo workshop, the legendary "Maître Squeletteur" of Le Locle who was the secret artisan behind the skeletonized wonders of Audemars Piguet and Breguet during the Neo-Vintage era. The Caliber 23SZ: The heart of this watch is the Valjoux 23SZ, the ultra-high-end, manual-wind column-wheel movement. The Lineage: The Valjoux 23 family (specifically the VZ and SZ variants) is the most prestigious movement blank in history, serving as the foundation for Patek Philippe’s perpetual calendar chronographs (Ref. 2499) and Audemars Piguet’s most complicated pieces. The "SZ" Distinction: In this rare skeletonized form, the movement has been transformed into a transparent mechanical sculpture. The column-wheel—the hallmark of high-end traditional chronography—is fully visible, allowing the wearer to observe the intricate engagement of the gears when the pusher is depressed. The Schaffo Hand-Finishing Attributing this work to Kurt Schaffo (and engraving by his son, Christophe) is based on several signature "tells" found in this piece: Artisanal Fretwork: Unlike modern laser-cut movements, this was skeletonized using a manual jeweler’s saw. The bridges have been pared down to their absolute minimum, a technique Schaffo perfected to ensure transparency without losing structural stability. Hand-Engraved Scrollwork: The bridges are decorated with dense floral "Acanthus" scrollwork, a style synonymous with the Schaffo family’s output for brands like Zenith and Corum. High-Art Anglage: Look closely at the edges of the gold-plated bridges; each is hand-beveled and polished to a mirror finish, a level of detail typically reserved for Patek or Vacheron.