Breguet 5857ST/12/5ZU Marine Dual Time SS / Rubber Strap (29461)

29461 Breguet 5857ST/12/5ZU Marine Dual Time, 5857ST125ZU, stainless steel on a rubber strap with a stainless steel deployant buckle, automatic movement (caliber 517f), GMT (second time zone dial at 6 o'clock), centered sweep seconds hand, silver guilloche dial with applied steel blue Roman and Arabic numerals, luminous hands and hour indicators, screw-down crown, display back, water resistant to 100 meters, diameter: 42mm, thickness: 12.5mm. Like New with original box and papers dated December of 2015.

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More about Breguet 5857ST/12/5ZU Marine Dual Time SS / Rubber Strap

This is a stainless steel Breguet Marine Dual Time 5857ST/12/5ZU. It has a black rubber strap with a stainless steel foldover deployment buckle, and a scratch resistant sapphire crystal. It has a protected screw down winding crown, and an exhibition display sapphire case back secured with 6 screws, and engraved around the perimeter with "BREGUET 4289 AZ-HORLOGER DE LA MARINE, and a reference number. The 42mm diameter solid coin-edged case, downturned lugs, and stepped bezel, are polished. The center of the dial is silver wave guilloche, inside a brushed plain reserve with applied blued-steel Roman numeral hour markers. Around the perimeter is a guilloche reserve with a dot minute/second scale, and luminous diamond shaped hour indices. It has blued Breguet steel minute and hour hands with luminous dots, and a blued center sweep second hand with a round Breguet counter balance. At 6 o'clock there is a large subsidiary dial for the GMT second time zone, with Arabic numeral hour markers around a plain, brushed reserve, and blued Breguet hands; around the perimeter is a dot minute scale with luminous dot hour indices. There is a silver-rimmed date aperture window at 6 o'clock, and an AM/PM subsidiary dial is at 3 o'clock, with a sunburst guilloche texture for 6am to 6pm (18 o'clock), and a linear wave guilloche texture for night, from 6pm until 6am. It has a 65-hour power reserve at full wind, and it's water resistant to 100 meters/330 feet. The 12.5mm thick case, dial, and movement are all signed.

This Breguet Marine Dual Time 5857ST/12/5ZU has a mechanical automatic self-winding Breguet caliber 517f movement. It's rhodium plated with fausses cotes embellishment, and it's constructed with 28 jewels, a shock absorber device, and an inverted in-line lever escapement. It includes a flat silicon balance spring, and the mechanism oscillates at a frequency of 28,800 vph (4 Hz).

The Breguet Marine Dual Time 5857ST/12/5ZU was introduced at the Basel World show in 2012.