A fine and attractive, Explorer II, automatic wristwatch in steel, with "rail" ivory dial and 24-hour hand, with original box, reference 16550.
A fine and attractive, Explorer II, automatic wristwatch in steel, with "rail" ivory dial and 24-hour hand, with original box, reference 16550. The Explorer II reference 16550 occupies a fascinating chapter in Rolex history, a moment of transition that, in hindsight, produced one of the brand’s most compelling modern collectibles. Introduced in the 1980s, the 16550 marked a decisive evolution of the Explorer II line. It was the first to feature a sapphire crystal, applied white gold–surrounded hour markers, and the independently adjustable 24-hour hand powered by the new caliber 3085. More refined, more technical, and more contemporary, it redefined the model’s identity. Yet what truly sets certain early examples apart is something Rolex never intended. The present watch, produced circa 1984, displays one of the most coveted dial variations in modern Rolex collecting: the so-called “ivory” dial. Originally born white, these early dials were affected by a subtle instability in the paint formulation. Over time, exposure to light and environmental factors transformed them into a rich, creamy tone. No two age in exactly the same way. Furthermore, this example distinguishes itself with the desirable “rail” dial configuration, where the lines of text above the 6 o’clock marker align vertically. The robust 40 mm Oyster case, fixed 24-hour bezel, and solid Oyster bracelet preserve the purposeful spirit of the Explorer II: a watch conceived for spelunkers, adventurers, and those navigating environments where day and night blur into one. And yet, in this configuration, it carries an unexpected warmth, technical in origin, emotional in presence. Offered in great overall condition and accompanied by its presentation box, this early 16550 captures a fleeting production moment, a rare dial evolution, and a chapter of Rolex history that can never be recreated.
