Omega Speedmaster Moonphase Green Ceramic Dial two tone 44.25mm 304.23.44.52.06.001

Description

Omega Speedmaster Moonphase Co-Axial Master Chronometer Chronograph – 18K Yellow Gold & Stainless Steel, Grey Dial, Green Ceramic Bezel, 44.25mm
Reference: 304.23.44.52.06.001
Collection: Speedmaster Moonphase
Condition: Pre-Owned

Specifications

• Brand: Omega

• Collection: Speedmaster Moonphase

• Reference: 304.23.44.52.06.001

• Case Material: Stainless Steel and 18K Yellow Gold

• Case Diameter: 44.25mm

• Case Thickness: 16.85mm

• Lug-to-Lug: 50mm

• Crystal: Scratch-Resistant Sapphire Crystal with Anti-Reflective Treatment on Both Sides

• Dial: Grey Sun-Brushed Dial

• Hour Markers: Diamond-Polished 18K Yellow Gold Indexes

• Hands: Diamond-Polished 18K Yellow Gold

• Bezel: Green Ceramic Bezel with Omega Ceragold™ Tachymeter Scale

• Movement: Omega Co-Axial Master Chronometer Caliber 9904

• Movement Type: Self-Winding Automatic Chronograph

• Chronograph Mechanism: Column-Wheel Chronograph

• Escapement: Omega Co-Axial Escapement

• Balance Spring: Silicon Balance Spring

• Jewels: 54

• Frequency: 28,800 vph / 4 Hz

• Power Reserve: Approximately 60 Hours

• Certification: METAS-Certified Master Chronometer

• Magnetic Resistance: Up to 15,000 Gauss

• Functions: Hours, Minutes, Small Seconds, Chronograph, Pointer Date, Moonphase and Tachymeter

• Chronograph Counters: Combined 12-Hour and 60-Minute Counter at 3 O'Clock

• Small Seconds & Date: Combined Display at 9 O'Clock

• Moonphase Display: Photorealistic Dual-Moon Display at 6 O'Clock

• Water Resistance: Originally Rated to 100m / 330ft

• Case Back: Sapphire Exhibition Case Back

• Original Strap: Grey Alligator Leather with Calfskin Lining

• Original Clasp: Stainless Steel Folding Clasp

• Lug Width: 21mm

• Condition: Pre-Owned

Specifications verified against Omega's official reference documentation.

The Omega Speedmaster Moonphase Co-Axial Master Chronometer Chronograph Reference 304.23.44.52.06.001 is an extraordinary expression of Omega's celebrated Speedmaster heritage, combining sophisticated mechanical complications with luxurious precious-metal detailing and innovative modern watchmaking technology. Featuring a substantial 44.25mm stainless steel and 18K yellow gold case, elegant grey sun-brushed dial, and distinctive green ceramic tachymeter bezel, this exceptional timepiece brings a refined sense of luxury to one of the most historically important chronograph collections in the world.

The Speedmaster collection has been closely associated with space exploration since its selection for NASA's manned space missions, ultimately becoming the first watch worn on the Moon during the historic Apollo 11 lunar landing in 1969. The Speedmaster Moonphase builds upon this remarkable legacy by incorporating a sophisticated astronomical complication that displays the changing phases of Earth's closest celestial companion. This connection between the Speedmaster's lunar history and its mechanical moonphase display creates a particularly meaningful expression of the collection's identity.

One of the most captivating features of this reference is its beautifully executed grey sun-brushed dial, which displays subtle variations in tone as light moves across its surface. The dial is complemented by diamond-polished 18K yellow gold hands and applied hour markers, creating an elegant contrast against the cool grey background. The warm gold accents extend throughout the case and chronograph controls, producing a sophisticated two-tone aesthetic that balances the sporting character of the Speedmaster with the refinement of a luxury dress chronograph.

The defining complication of this extraordinary timepiece is its photorealistic moonphase display positioned at 6 o'clock. Unlike conventional moonphase watches that use stylized representations of the Moon, Omega employs a specially microstructured metallic crystal disc displaying two exceptionally detailed lunar images. The remarkable precision of the imagery captures the appearance of the Moon's surface, creating one of the most visually impressive moonphase displays in contemporary Swiss watchmaking.

Beyond its striking appearance, the moonphase mechanism is engineered for exceptional astronomical accuracy. Its advanced construction allows the display to follow the lunar cycle with remarkable precision, requiring correction only once every ten years under normal operation. This level of mechanical sophistication reflects Omega's commitment to combining traditional complications with contemporary engineering.

Surrounding the dial is a distinctive green ceramic bezel incorporating Omega's proprietary Ceragold™ tachymeter scale. This innovative technology allows the manufacturer to integrate 18K gold markings into a ceramic bezel, producing an exceptionally smooth and durable surface with a luxurious metallic finish. The rich green ceramic provides a striking contrast against the grey dial and yellow gold accents, giving this reference a particularly recognizable appearance within the Speedmaster Moonphase collection.

Powering the watch is the exceptional Omega Co-Axial Master Chronometer Caliber 9904, a sophisticated automatic chronograph movement featuring a column-wheel mechanism, Co-Axial escapement, and two mainspring barrels mounted in series. The movement delivers approximately 60 hours of power reserve, combining advanced chronograph functionality with the intricate moonphase and pointer-date complications.

The Caliber 9904 is certified as a Master Chronometer by the Swiss Federal Institute of Metrology (METAS), meeting rigorous standards for precision, mechanical performance, and magnetic resistance. Engineered to withstand magnetic fields reaching 15,000 gauss, the movement represents a significant advancement in modern mechanical watchmaking. Its silicon balance spring and Co-Axial escapement further contribute to dependable long-term performance and improved mechanical efficiency.

The chronograph incorporates an elegantly arranged two-register display, with the combined 12-hour and 60-minute chronograph counter at 3 o'clock and a subsidiary small seconds display with pointer date at 9 o'clock. This symmetrical configuration provides excellent functionality while allowing the remarkable moonphase display to occupy a prominent position at the bottom of the dial.

The substantial 44.25mm stainless steel and 18K yellow gold case combines brushed and polished surfaces, highlighting the careful attention to detail throughout its construction. The sculpted chronograph pushers and prominent winding crown reinforce the watch's traditional Speedmaster identity, while the precious-metal accents introduce an elevated level of refinement.

Through the sapphire exhibition case back, the beautifully finished Caliber 9904 can be admired. Its rhodium-plated movement components feature Omega's distinctive Geneva waves in arabesque, showcasing the manufacture's commitment to both technical innovation and decorative craftsmanship. The visible movement adds another dimension of appreciation for enthusiasts who value the intricate engineering behind sophisticated mechanical chronographs.

Originally presented on a grey alligator leather strap with a stainless steel folding clasp, this reference offers a beautifully coordinated appearance. The strap complements the dial's understated grey tones while allowing the yellow gold case details and green ceramic bezel to remain the focal points of the design.

The Omega Speedmaster Moonphase 304.23.44.52.06.001 represents an exceptional combination of historical significance, astronomical complication, precious-metal craftsmanship, and advanced mechanical engineering. Its distinctive green Ceragold bezel, elegant grey dial, photorealistic moonphase display, and METAS-certified Caliber 9904 distinguish it from more conventional Speedmaster chronographs.

For collectors seeking a sophisticated Omega timepiece that combines the legendary Speedmaster heritage with the artistry of traditional high-complication watchmaking, this extraordinary Moonphase Chronograph offers an appealing balance of technical innovation, luxurious materials, and timeless design.

Alexanders Jewelers is located in Columbus, Ohio and has specialized in luxury watches and fine jewelry for over 20 years. We are members of Jewelers of America and the Better Business Bureau with an A+ rating. Every pre-owned luxury timepiece is carefully inspected for authenticity and condition. We offer financing options and accept all major credit cards and wire transfers.