Omega Constellation Co-Axial Master Chronometer 41mm Steel-Yellow Gold Sun-Brushed Green Dial 131.23.41.21.10.001

The Omega Constellation is one of the most storied dress-sport watch families in horological history, tracing its origins to 1952 when Omega introduced a collection specifically designed to celebrate chronometric excellence. Over the decades the Constellation evolved from a relatively restrained dress piece into a confident, architecturally bold watch, culminating in the modern generation defined by its integrated case construction, distinctive claws on the case flanks, and a dial vocabulary that blends classical Roman numerals with contemporary index hour markers. Reference 131.23.41.21.10.001 represents the collection at its most expressive, pairing a two-tone steel and yellow gold case with a sun-brushed green dial that gives the watch a vibrant, almost jewel-like presence.

At 41mm across the wrist, this Constellation occupies the sweet spot between a traditional dress watch and a modern sport reference. The case is constructed from stainless steel enriched with yellow gold accents—a pairing that nods to the collection's heritage of offering precious-metal elegance without abandoning everyday wearability. The ceramic bezel is polished to a deep, lustrous finish that resists scratching and maintains its appearance for years of daily wear, while the steel and gold case architecture gives the watch a substantial yet balanced feel on the wrist.

The sun-brushed green dial is the defining visual element of this reference. The sun-brushing technique radiates from the center outward, creating a dynamic interplay of light across the green surface that shifts in character under different lighting conditions—vivid in sunlight, moody and sophisticated indoors. Both index and Roman numeral hour markers are applied to the dial, a design detail unique to certain Constellation references that bridges centuries of timekeeping tradition with a thoroughly modern sensibility. The hands and applied markers are finished in a manner consistent with Omega's meticulous quality standards.

Powering the watch is Omega's Co-Axial Master Chronometer movement, a designation that carries significant weight in contemporary watchmaking. The Co-Axial escapement, developed in collaboration with independent watchmaker George Daniels, reduces friction in the movement and extends service intervals compared with a traditional lever escapement. Master Chronometer certification, granted by the Swiss Federal Institute of Metrology (METAS), means the movement has passed an eight-test protocol verifying precision, magnetic resistance up to 15,000 gauss, and overall performance—placing it among the most rigorously certified movements available at any price point.

The watch is presented on a rubber and leather strap, a combination that delivers the refined appearance of leather alongside the resilience and comfort of rubber—making it equally at home in a business meeting or an active weekend setting. This versatility underlines the broader appeal of the modern Constellation: a timepiece that transitions effortlessly between contexts without ever appearing out of place.

Bizak & Co. is pleased to offer reference 131.23.41.21.10.001 brand new, allowing the next owner to experience the watch from its very first moment on the wrist. Whether you are an Omega collector, a first-time luxury watch buyer, or someone seeking a meaningful gift, this Constellation Co-Axial Master Chronometer represents outstanding value, enduring design, and certified mechanical excellence. Browse our full Omega inventory at bizakandco.com or reach out directly to our team to purchase this reference or ask any questions—we are here to help you find the right watch with confidence.