Skeletonized version of caliber 2260; hand-wound movement with large power reserve and tourbillon escapement.
While openworking stems from purely aesthetic considerations, it nonetheless makes each stage even more complex compared with a solid calibre. Striking such a subtle balance between openworking and functionality thus calls for an average two months for the conception and modelisation phases alone, as well as long hours of hand-drawing, chamfering and engraving. All these operations require nimble fingers as well as infinite patience. This is an art in which the Manufacture Vacheron Constantin excels, and which it has been faithfully exercising by hand ever since the first openworked and engraved balance-cock produced at the time of its founding almost 260 years ago. Calibre 2260 SQ is entirely in tune with this longstanding hand-crafted tradition. Its distinctive layered construction results in a substantial surface to be decorated and thus implies even more manual workmanship. Compared with the solid base movement, a single 2260 SQ calibre requires 10 additional hours of chamfering and hand-drawing, as well as 40 extra hours of engraving.