Omega 3876.50.31 Speedmaster Moon Phase Manual Wind SS (27492)

27492 Omega 3876.50.31 Speedmaster Moon Phase 38765031, stainless steel on an alligator strap with a stainless steel deployant buckle, manual wind Omega caliber 1866 movement, black dial with luminous hands and hour markers, moon phase and pointer date at 12 o'clock, 12 hour chronograph, sapphire crystal, display back, water resistant to 100ft, Like New with Original Box and Papers; dated 5/2017


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More about Omega 3876.50.31 Speedmaster Moon Phase Manual Wind SS

This is a stainless steel Omega Speedmaster Professional Moonwatch 3876.50.31. It has an alligator leather strap with an Omega folding stainless steel deployment buckle, and a scratch-resistant sapphire crystal with anti-reflective treatment. It has round chronograph push buttons and a screw down protected winding crown with the Omega logo. There are two correctors at 9 and 10 o'clock for the date on the left side case. It has a screw down exhibition sapphire display case back engraved around the perimeter with "OMEGA – THE FIRST AND ONLY WATCH WORN ON THE MOON." The solid 42mm diameter case, curved lugs, and fixed stainless steel flat black bezel with a white Arabic numeral tachymeter scale to 500 UPH, are polished/brushed. The dial is black with luminous baton hour markers around a luminous white perimeter minute/one-fifth second scale. It has white baton hands with luminous inserts, and a white center sweep chronograph hand with a luminous arrow tip and broadened counter balance. There are four recessed black subsidiary dials with luminous white Arabic numerals, markers, and hands, three of which are steel rimmed, including a running small seconds register at 9 o'clock, a 12-hour chronograph totalizer at 6 o'clock, and a 30-minute totalizer at 3 o'clock. The moon phase dial with surrounding white luminous radial pointer date is at 12 o'clock. It's water resistant to 30 meters/100 feet, and there is a 48-hour power reserve at full wind. The 15mm thick case, dial, and movement are all signed.

This Omega Speedmaster Professional Moonwatch 3876.50.31 has a mechanical manual winding Omega caliber 1866 (base Lemania 1874) movement. It's constructed on the famous Omega Speed master caliber 1861, with an added moon phase and date indicator function. It's rhodium-plated, with fausses cotes and Cotes de Geneve embellishment, and it's constructed with 18 jewels, a shock absorber device, and a straight-line lever escapement. It includes a monometallic balance, a self-compensating flat balance spring, and an index regulator. The mechanism oscillates at a frequency of 21,600 vph (3 Hz).

The Omega Speedmaster Professional Moonwatch 3876.50.3 was 1ntroduced in 2003.