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BREGUET MARINE CHRONOMETER ELECTRO-MECHANICAL Electro-Mechanical Marine Chronometer" Breguet, No. 427. Made circa 1990. Fine, mahogany, brass-bound deck Chronometer with center seconds and electronically powered remontoir. Three-tier polished mahogany box with brass banding and hinged handles, applied brushed brass plaque to the middle section for the signature and number, gimbaled brass bowl with locking bar, knurled bezel and beveled crystal. White with painted black radial Roman numerals, outer minute track. Blued steel spade hands. Cal. 42 mm., frosted gilt, brass plates, battery powered remontoir, straight-line lever escapement, monometallic balance, shock absorber, blued steel flat balance spring, screw micrometer regulator, stop lever at the side.