The Rolex Yacht-Master Midsize Ref. 168623 is a distinguished two-tone timepiece that masterfully blends the robustness of stainless steel with the warmth of 18K yellow gold, creating a sporty yet refined aesthetic that defines the Yacht-Master collection . Housed in a versatile 35mm Oyster case—a mid-size configuration that offers a comfortable and elegant fit for a wide range of wrists—this reference features a luminous silver dial that provides a clean canvas for the gold hour markers and hands, while the signature rotating 18K yellow gold bezel with raised numerals stands as a hallmark of the Yacht-Master’s nautical heritage . Powering this timepiece is the legendary in-house automatic Caliber 2235, a COSC-certified chronometer movement renowned for its precision and reliability, offering a robust 48-hour power reserve and the convenience of a quickset date function, which is magnified by the iconic Cyclops lens integrated into the scratch-resistant sapphire crystal . Introduced in 2000 as the successor to the reference 68623, this model features the upgraded Oyster bracelet with solid 18K gold center links, providing a more substantial feel and enhanced durability compared to its predecessor . Water-resistant to 100 meters and secured by a folding Oysterlock clasp, the 168623 offers the discerning collector a perfect fusion of Rolex’s peerless craftsmanship, a unique mid-size proportion that stands out from the more common 40mm variants, and the unmistakable prestige of the Crown—an ideal choice for those who appreciate a refined, less ubiquitous sports model that exudes timeless elegance. Key specifications: 35mm steel and 18K yellow gold case; rotating yellow gold bezel; silver sunburst dial; Rolex Caliber 2235 automatic movement; 48-hour power reserve; Oyster bracelet with folding clasp; 100m water resistance; sapphire crystal with Cyclops.