Zenith and J.N. Shapiro give Calibre 135 an American guilloché identity

Zenith’s second Double Signed edition pairs its modern Calibre 135 with a rose-gold case, a J.N. Shapiro-made guilloché dial and movement damaskeening, limited to 25 watches.

By TomorrowNews · AI-assisted briefing
Source published 13 Nov 2026 · Briefing published 13 November 2026

Conceptual illustration of a rose-gold chronometer with hand-guilloché craft in a California watchmaking workshop — AI-generated illustration — not a photograph of the event. Conceptual editorial rendering, not documentary evidence. · TomorrowNews / AI-generated illustration

The 39.15mm watch uses three hand-cut dial patterns: barleycorn, basketweave and Shapiro’s Infinity Weave. Its manually wound 2.5Hz movement is COSC-certified, regulated to within two seconds per day and offers about 72 hours of power reserve.

Zenith lists the edition at CHF 68,900. The dial work is performed in California, while the decorated movement links an historic Swiss chronometer architecture with finishing associated with American pocket watches.

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