Breguet Marine Automatic Big Date 5817ST/92/SM0. It has a stainless steel 39mm case with Breguet’s signature coined edges, and open back. Dial hand engraved (engine-turned) guilloche black dial with a fine sunburst wave pattern. Applied blued steel Roman numeral hour markers to a matte silver chapter ring. Gold colored painted minute dots on outer rim of the dial. Blue steel hands with a luminous dot on the minutes & hours hands. Big date at the 6 o’clock position. Swiss made automatic movement. Breguet Caliber 517GG, beats at 28,800 vph, contains 35 jewels & has an approximate power reserve of 65 hours.