Zenith Grande Class Dual Time

More about Grande Class Dual Time

This is a stainless-steel Zenith Grande Class Dual Time 03.0520.683/01.C492. It includes an alligator leather strap with a stainless-steel double deployment buckle and scratch resistant sapphire crystals (domed over the dial). It has a signed pull-out winding crown and a rounded rectangular quick-adjustment push button on the left-side case band at 10 o'clock for adjusting the central 24-hour hand. There is an exhibition sapphire display crystal case back secured with 8 screws and it's engraved with "ZENITH GRANDE CLASS – WATER RESISTANT 50M – 03 0520 683 - SWISS MADE - STAINLESS STEEL," and a serial number. The domed dial has a circular silver guilloche Clous de Paris texture surrounded by an applied Arabic numeral 24-hour GMT time zone scale, and there is a brushed silver reserve with applied steel Arabic numerals, and applied dart hour markers surrounded by a perimeter black minute/second scale. It has steel pointed baton hour and minute hands, a steel center sweep 24-hour hand with a luminous arrow tip, and there is a trapezoidal steel-framed quick-set date aperture window between 4 and 5 o'clock. It includes a Certified Official Superlative Chronometer (COSC) rating, and it has a 50-hour power reserve at full winding. It's water resistant to 30 meters/100 feet, and the 14.5mm thick case, dial, and movement are all signed. This Zenith Grande Class Dual Time 03.0520.683/01.C492 has a mechanical automatic self-winding El Primero caliber elite 683 movement. It's rhodium plated with Cotes de Geneve embellishment, and it has a guilloche textured oscillator segment. It's constructed with a straight-line lever escapement, a shock absorber device, and a hacking seconds function for precision time setting. It includes a self-compensating free-sprung balance spring, and the mechanism oscillates at a frequency of 28,800 vph (4Hz). The Zenith Grande Class Dual Time 03.0520.683/01.C492 was released in the early 2000's.

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