Girard Perregaux 1966 Orion Steel 40mm Blue Aventurine Dial 49555-11-435-BB4A

The Girard-Perregaux 1966 Orion 49555-11-435-BB4A is one of the most evocative expressions of a collection that traces its design DNA directly to the storied round dress watches Girard-Perregaux produced in the 1960s. Revived as a modern line, the 1966 family has become the maison's purist statement: slim, symmetrical, and stripped of excess complication, allowing the dial to speak for itself. The Orion variant takes that philosophy a step further by replacing a conventional lacquered surface with a blue aventurine dial — a material cut from quartz-family mineral glass whose suspended metallic particles catch light and scatter it like a field of distant stars.

At 40mm in stainless steel, the case occupies the ideal middle ground between vintage slenderness and contemporary wrist presence. The proportions echo mid-century haute horlogerie — a thin profile, gently curved lugs, and a case edge that flows seamlessly into a steel bezel with no interruption from crown guards or sporting flourishes. The result is a watch that sits flush and low on the wrist, disappearing under a shirt cuff when required yet commanding attention the moment the sleeve is rolled back.

The blue aventurine dial is the defining element of this reference. Aventurine is formed by a controlled crystallization process that distributes tiny reflective inclusions — typically copper or chrome-bearing particles — throughout the mineral matrix, producing the characteristic sparkling depth. In certain light the dial reads as a deep midnight blue; shift your wrist and constellations seem to ignite across the surface. Index hour markers complement the celestial aesthetic without competing with the dial's natural drama, and the overall layout preserves the clean, uncluttered geometry the 1966 collection demands.

A supple leather strap completes the ensemble, chosen for its compatibility with both formal and smart-casual settings. The strap's texture and color are calibrated to complement the steel case and the cool blue of the aventurine, ensuring that every element of the watch works as a unified composition rather than an assembly of parts. For a watch intended to be worn as much as admired, the leather strap also contributes to exceptional all-day comfort.

Bizak & Co. is pleased to offer this Girard-Perregaux 1966 Orion 49555-11-435-BB4A in brand-new condition, complete with box and papers, at the best price available online. Purchasing from Bizak means full confidence in authenticity, immediate availability, and the personal service of a specialist dealer whose expertise in fine Swiss watchmaking is reflected in every listing. Whether you are buying your first Girard-Perregaux or adding a statement piece to an established collection, this reference deserves serious consideration — reach out to our team at bizakandco.com to purchase or to discuss this watch in detail.