Zenith Class T Open Silver Dial


Zenith, Class T Open, Reference: 03.0510.4021/01.C492, Stainless Steel on a Strap with a Stainless Steel Double-Foldover Buckle, Partially Skeletonized Automatic El Primero Movement, COSC, Chronograph Function with Minute Counter at 3, Small Seconds at 9, Power Reserve Indicator, Silver Partially Skeletonized Dial With Applied Silver Stick Markers and Numerals, Diameter: 40mm, Thickness: 16mm, Display Back, Sapphire Crystal, Water Resistant to 50 Meters, New with Box and Papers.

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More about Class T Open Silver Dial

This is a stainless steel Zenith, Class T Open 03.0510.4021/01.C492. It has a leather strap with a stainless steel double fold-over deployment buckle, and a scratch resistant sapphire crystal. There is an exhibition sapphire display case back secured with 8 screws, and engraved with "ZENITH CLASS – WATER RESISTANT 50M – STAINLESS STEEL – SWISS MADE," and the reference number "03.0510.4021." It has rounded rectangular chronograph pushbuttons, and the 40mm diameter solid three-body case, downturned lugs, and angled bezel are polished/brushed. The dial is white with applied faceted dart hour indices, and applied Arabic numeral hour markers at 2, 4, 6, 8, and 12 o'clock. It has blued baton hands, a center sweep seconds chronograph hand, and a perimeter minute/second scale. There is a circular cutaway with a steel "gasket" rim in the dial between 10 and 11 o'clock that exposes the escapement. Interposed on this and part of the gasket is the running seconds counter at 9 o'clock. It has a brushed steel 60-minute totalizer at 3 o'clock, and both sub dials have skeletonized white "film reel" centers. There is a 50-hour power reserve arc between 4:30 and 7:30 o'clock, with a skeletonized rose gold indicator hand. It has a Certified Official Superlative Chronometer (COSC) rating. It's water resistant to 50 meters/165 feet, and the 16mm thick case, dial, and movement are all signed. This Zenith, Class T Open 03.0510.4021/01.C492 has a mechanical El Primero caliber 4021 column wheel chronograph movement. It's rhodium plated with fausses cotes embellishment, and it's constructed with 39 jewels, 248 components, and a shock absorber device. It includes a silicon straight-line lever escapement, a self-compensating flat balance spring, a silicon escape wheel, and a monometallic balance that's adjusted to 6 positions. The mechanism oscillates at a frequency of 36,000 vph (5Hz).

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