Omega Aqua Terra Annual Calendar Co-Axial 18K White Gold LIMITED

More about Aqua Terra Annual Calendar Co-Axial 18K White Gold LIMITED

This is an 18K white gold Omega Seamaster Aqua Terra Annual Calendar Co-Axial Chronometer 231.50.43.22.01.001. It includes an 884 integral Omega link 18k White gold bracelet with a folding deployment clasp and scratch resistant sapphire crystals. It has a signed screw down winding crown and a screw down exhibition sapphire display crystal case back engraved with "SEAMASTER – AQUA TERRA – 150M/500 FEET – ANNUAL CALENDAR," a serial number and hallmarks underneath the lugs. The 43mm diameter barrel-shaped solid two-body case, gently curved lyre lugs, bracelet, and flat angled bezel, are polished/brushed. The dial is dark grey with vertical "teak" sailboat plank-style stripes, applied rose gold dart hour indices with luminous triangular inserts surrounded by a white perimeter minute/second scale with Arabic numerals every five seconds to 60. It includes gold faceted sword hands with a luminous arrow tip on the minute hand and a gold center sweep second hand with a luminous arrow and needle tip. It has a twin "coffin-shaped" gold framed month and date aperture window at the 3 o'clock position. It's water resistant to 150 meters/500 feet, it has a 55-hour power reserve at full winding, and the 13.2mm thick case, dial, and movement are all signed. This Omega Seamaster Aqua Terra Annual Calendar Co-Axial Chronometer 231.50.43.22.01.001 has a mechanical automatic self-winding Caliber 8601 (based on the Omega caliber 8500) Co-Axial movement with automatic winding in both directions and a co-axial escapement. It's rhodium plated with fan-shaped Cotes de Geneve embellishment, and sunray rose gold on the oscillating weight. It's constructed with 39 jewels, twin barrels mounted in series, a self-compensating free-sprung balance spring, and a shock absorber device. It includes a fine regulating system, a monometallic balance with four screws that's adjusted to five positions, and the mechanism oscillates at a frequency of 25,200 vph (3.5 Hz). The Omega Seamaster Aqua Terra Annual Calendar Co-Axial Chronometer 231.50.43.22.01.001 annual calendar was released in 2010 and it was produced until 2013 in a limited edition of 61 examples. It only requires adjustment in February.

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