G.F.J. Calibre 135 Double Signed with J.N. Shapiro

With the G.F.J. Calibre 135 Double Signed, ZENITH continues its exploration of collaborative watchmaking, joining forces with American independent watchmaker J.N. Shapiro for an exclusive limited edition of 25 pieces. Housed in a 39 mm rose gold case, this creation brings together the Manufacture’s celebrated chronometric heritage and Shapiro’s distinctive Californian craftsmanship.

The silver dial is entirely engine-turned in Shapiro’s atelier, combining three hand-crafted guilloché patterns: barleycorn, basketweave and his signature Infinity Weave. Applied rose gold details frame the double signature, ZENITH | J.N. Shapiro.

Through the sapphire caseback, the legendary hand-wound Calibre 135 reveals bridges decorated with American-style damaskeening. COSC-certified and regulated to ±2 seconds per day, it offers a 72-hour power reserve, uniting historic precision with a new decorative expression.