Breguet 5817ST Marine Automatic Big Date SS Silver Dial

The Breguet Marine Automatic Big Date reference 5817ST/12/SM0 is a refined expression of maritime elegance, featuring a 39 mm stainless steel case measuring approximately 11.9 mm in thickness and water-resistant to 100 meters (10 bar). Introduced in the mid‑2010s, this model houses the in‑house automatic calibre 517GG, offering a generous 65‑hour power reserve and the signature big‑date display at 6 o’clock. The silvery engine‑turned dial is adorned with blued Breguet full‑apple hands and applied Roman numerals, delivering exceptional legibility and classical refinement. The exhibition sapphire case back reveals the beautifully finished movement, including an engine‑turned gold rotor that echoes the dial’s guilloché motif. On a brushed and polished stainless steel bracelet with folding clasp, this watch balances sporty robustness with haute horlogerie craftsmanship. Collectors prize its combination of technical merit, elegant proportions, and the rarity of the big‑date complication in a sporty yet dressy Breguet design. Like New with European Watch Company pouch.