The Rolex Explorer II, particularly the models featuring the iconic "polar" dial and luminous tritium hour markers, holds a special place in the hearts of watch enthusiasts. Its rugged design, robust functionality, and rich history make it a highly sought-after collectible and a testament to Rolex's commitment to precision and adventure. This article will explore the evolution of the Explorer II, focusing on the models with the distinctive polar dial and the fascinating role of tritium in their luminescence, covering key iterations from the 1970s to the early 2000s.
1971: The Birth of a Legend – The Explorer II Ref. 1655
In 1971, Rolex introduced a watch specifically designed for the challenges faced by spelunkers and cave explorers: the Explorer II reference 1655. This groundbreaking timepiece featured a crucial addition – a 24-hour hand, allowing for easy distinction between AM and PM, especially crucial in the dark depths of caves where orientation is paramount. Initially, the reference 1655 was exclusively offered with a black dial, which, paired with the luminous tritium hour markers and hands, provided exceptional readability in low-light conditions. This original Explorer II, often referred to as the "Steve McQueen" (though no definitive proof exists he wore one) quickly gained a cult following, solidifying its place in horological history. The tritium used in these early models, while effective, has a characteristic aging process, resulting in a unique creamy patina that adds to the watch's desirability among collectors today. The dial itself is often referred to as "polar" due to its stark contrast and high legibility. The combination of the black dial, luminous tritium markers, and the 24-hour hand contributed to a watch that was both highly functional and aesthetically striking. A Rolex polar explorer ii review from this era would highlight the watch's pioneering spirit and its ability to withstand extreme conditions.
The Allure of Tritium: A Look at the Luminescent Material
The use of tritium in the early Explorer II models is a significant aspect of their character. Tritium, a radioactive isotope of hydrogen, emits a soft, consistent glow without needing external light sources. This self-powered illumination was a game-changer for explorers and adventurers, providing reliable readability in dark environments. Unlike modern luminescent materials like LumiNova, tritium’s glow gradually fades over time, resulting in the unique creamy or yellowish hue seen on many vintage Explorer IIs. This aging process, rather than being a flaw, has become a highly desirable characteristic among collectors, adding to the watch's historical significance and character. The even and consistent glow of tritium, even after decades, was a significant improvement over earlier luminescent paints, contributing greatly to the Explorer II's functionality in its intended environment. A true Rolex polar explorer review would not be complete without mentioning the significant role of tritium in the watch's legacy.
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