ZENITH Port Royal Chronomètre cal.135 / 1950s Observatory Calibre

— Stillness marked by supreme accuracy —

A piece carrying a legendary calibre written into watch history.

The Port Royal, the summit of the chronometers Zenith was proud of.

Counting yellow gold, white gold and steel together, only around 5,000 were produced: a rare piece.

— A heart that won observatory competitions —

Open the caseback and the Cal.135 lives there: the crystallisation of watchmakers' passion.

Its overwhelmingly large balance turning slowly and accurately is exactly the landscape that stands for the mechanical watch's golden age.

A title meaning "the king's port" in French, given only to Zenith's special high-precision watches.

— An expression drawn by the years —

The dial has changed beautifully toward a soft patina.

Three-dimensional indexes, and the star emblem of Zenith shining at twelve.

A bearing that only decades can create, and that only vintage is allowed.

— Wearing history at the wrist —

A robust stainless steel case, with composed lug shapes that add a modern impression.

From business to a quiet weekend, Zenith's obsession with accuracy — beyond mere usefulness — quietly fills the pleasure of ownership.

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