The Rolex Submariner Date Ref. 16613LB, affectionately known as the “Bluesy,” is a landmark vintage timepiece that masterfully blends the professional-grade functionality of the iconic dive watch with the warm prestige of two-tone construction. Produced from 1988 to around 2010, this 40mm model features a stainless steel Oyster case complemented by an 18k yellow gold winding crown and a unidirectional rotatable bezel fitted with a vibrant blue aluminum insert, whose numerals and graduations are elegantly gold-filled, offering a stunning visual contrast that defines this reference. The blue dial is a study in dynamic elegance, its sunburst finish shifting beautifully from deep navy to brilliant azure depending on the light, and is adorned with gold-framed round hour markers and the iconic Mercedes hands, all filled with luminescent material for optimal readability. A discreet date window at 3 o’clock, magnified by the signature Cyclops lens, maintains the dial’s clean and balanced aesthetic. At its heart beats the legendary in-house automatic Caliber 3135, a movement widely regarded as one of the finest and most robust ever produced by Rolex, offering a quickset date function and a 48-hour power reserve, all while maintaining COSC chronometer certification for exceptional accuracy. The watch is presented on the iconic three-piece link Oyster bracelet, which masterfully combines stainless steel links with 18k yellow gold center links, and is secured by a folding Oysterlock clasp. Housed within a hermetically sealed Oyster case with a screw-down crown and Triplock triple waterproofness system, the Submariner 16613LB offers professional 300-meter water resistance. A true collector’s piece, this reference has skyrocketed in value and represents a perfect synthesis of vintage charm, iconic two-tone design, and enduring Rolex quality, making it a treasured heirloom for generations and a cornerstone of any serious collection.