The Rolex Explorer II, a watch synonymous with exploration and adventure, boasts a rich history punctuated by significant design changes and material upgrades. While many enthusiasts focus on the distinct generations marked by different reference numbers, a fascinating, often overlooked, transitional period exists within the 16570 reference: the watches produced during the shift from Tritium to Luminova lume. These watches, manufactured in 1998, represent a rare and compelling middle ground, possessing characteristics of both preceding and succeeding generations, making them highly sought after by collectors. This article will delve into the intricacies of these transitional 16570s, exploring their unique features, historical context, and current market value, alongside a broader examination of the Explorer II's evolution.
Rolex Explorer II Release Date: A Legacy of Exploration
The Explorer II's story began in 1971 with the introduction of reference 1655, a watch designed for cave exploration and other challenging environments. Its defining feature was the independently adjustable 24-hour hand, crucial for differentiating between day and night in low-light conditions. This initial model featured a distinctive orange 24-hour hand and a matte dial, reflecting the rugged functionality intended for its purpose.
Subsequent iterations refined the design, culminating in the reference 16570, produced from 1989 to 2011. This reference is arguably the most popular among collectors, characterized by its robust build, reliable movement, and versatile aesthetic. It’s within this 16570 lineage that our focus lies, specifically on the 1998 transition year.
The 1998 Transition: From Tritium to Luminova
In 1998, Rolex made a significant change to its luminescent material, phasing out Tritium in favor of Luminova. Tritium, a radioactive isotope of hydrogen, provided a self-powered glow, but concerns regarding its radioactivity led to its eventual discontinuation. Luminova, a non-radioactive phosphorescent material, required an external light source to charge but offered a safer alternative.
The 16570s produced in 1998 represent the bridge between these two eras. These watches often exhibit a subtle blend of both lume types. Some examples may have Tritium on the hour markers and Luminova on the hands, showcasing a fascinating transitional characteristic that makes them highly collectible. Identifying these subtle differences requires a keen eye and often involves examination under UV light to distinguish the unique glow of Tritium from Luminova. This makes the authentication and dating of these watches a particularly interesting exercise for enthusiasts. The exact number of watches produced during this precise transition period is unknown, contributing to their rarity and desirability among collectors.
Rolex Explorer II Specifications: A Consistent Standard of Excellence
Throughout its various iterations, the Explorer II has maintained a consistent set of core specifications, underscoring its dedication to robust functionality. The 16570, including the 1998 transitional models, typically features:
* Case: 40mm stainless steel Oyster case, renowned for its water resistance and durability.
* Movement: Caliber 3185, a self-winding mechanical movement with a power reserve of approximately 48 hours. This movement is known for its reliability and precision.
* Crystal: Sapphire crystal, highly resistant to scratches.
* Water Resistance: 100 meters (330 feet).
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