From Robb Report · Rachel Cormack · · 40s
Zenith G.F.J. Calibre 135 Double-Signed Watch Launch
Zenith's new G.F.J. Calibre 135 watch, double-signed by Japanese and American watchmakers, hits collectors' markets.
In brief
Zenith's new G.F.J. Calibre 135 watch, double-signed by Japanese and American watchmakers, hits collectors' markets. Zenith's G.F.J. Calibre 135 watch, double-signed by Naoya Hida and Joshua Shapiro, appeals to collectors with minimalist design and precious materials. Originally reported by Robb Report.
Zenith G.F.J. Calibre 135
Zenith launched the G.F.J. Calibre 135 in 2025, named after founder Georges Favre-Jacot, for watch collectors.
Double Signed Program
The Double Signed program invites indie watchmakers to collaborate on the G.F.J. Calibre 135.
Naoya Hida and Joshua Shapiro Collaborations
Naoya Hida added minimalist elegance to the G.F.J. Calibre 135 in June 2026, while Joshua Shapiro infused his design DNA.
What matters most
Zenith's G.F.J. Calibre 135 watch, double-signed by Naoya Hida and Joshua Shapiro, appeals to collectors with minimalist design and precious materials.
