Zenith El Primero 410 Annual Calendar Silver Dial

More about El Primero 410 Annual Calendar Silver Dial

This is a stainless steel Zenith El Primero 410 Chronograph 03.2091.410/01.C494. It has a leather strap with a stainless steel Zenith star tang buckle, and scratch resistant sapphire crystals with anti-reflective coatings. It has "pushrod" style chronograph push buttons, a pull out signed winding crown, two correctors for the date on the left-side case band between 8 and 9 o'clock, and there is an exhibition sapphire display case back secured with 4 screws, and it's engraved with "EL PRIMERO – 50M – 03.2091.410," and a serial number. The 42mm diameter solid three-body case, gently curved lugs, and stepped bezel, are polished/brushed. The dial is silver sunray with faceted, silvered steel baton hour indices with luminous ends around a black minute/one-fifth-of-a-second scale. Around the outside is a black 100th second with Arabic numerals every five seconds, and the perimeter includes a black tachymeter scale to 500 UPH. It has steel faceted baton hands with luminous SuperLuminova fill, and there is a blued steel center sweep chronograph seconds hand with a Zenith star counterbalance. A steel framed date aperture window is between 4 and 5 o'clock. There are twin day and month aperture windows at 10 and 2 o'clock, and it has three recessed silver subsidiary dials with fine concentric circle guilloche, Black Arabic numerals and markers, and steel indicator hands, including a small running constant seconds register at 9 o'clock, a color moon phase indicator at 6 o'clock, and there is a 30-minute chronograph totalizer at 3 o'clock. It's water resistant to 50 meters/165 feet, it has a 50-hour power reserve at full winding, and the 12.75mm thick case, dial, and movement are all signed. This Zenith El Primero 410 Chronograph 03.2091.410/01.C494 has a mechanical automatic self-winding El Primero 4410Z (base Zenith El Primero caliber 400) column wheel chronograph movement. It's rhodium plated with fausses cote embellishment, and it's constructed with 31 jewels, 390 components, an anti-shock system, and blued screws. It includes a straight-line lever escapement, a self-compensating flat-balance, and a skeletonized rotor with the Zenith star in the center. The mechanism oscillates at a frequency of 36,000 vph (5 Hz). This Zenith El Primero 410 Chronograph 03.2091.410/01.C494 was based on an iconic watch from the 1970's – it was introduced c. 2014.

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