The Rolex Sea-Dweller 16660, affectionately known as the "Triple Six," holds a revered position in the pantheon of dive watches. Released in 1978, this iteration represents a significant leap forward in Rolex's saturation diving technology, solidifying its reputation for robust, reliable, and exquisitely crafted timepieces built to withstand the most extreme underwater environments. Its legacy extends far beyond its technical achievements; the 16660 boasts a compelling history, unique design features, and a fervent collector following that continues to grow. This article delves into the fascinating storia (history) of the Rolex 16660, exploring its key features, variations, and enduring appeal.
Rolex 16660: A Legacy of Depth and Durability
The 16660 emerged as a direct descendant of the pioneering Rolex Sea-Dweller line, inheriting and expanding upon its legacy of extreme depth capabilities. Previous models had already pushed the boundaries of underwater timekeeping, but the 16660 marked a crucial evolution. Its most significant advancement was a substantial increase in water resistance. While its predecessors had impressive depth ratings, the 16660 boasted a remarkable 1220 meters (4000 feet) of water resistance – a feat achieved through the incorporation of a helium escape valve. This ingenious mechanism, crucial for saturation diving, allowed the controlled release of helium gas that permeated the watch case during deep-sea dives, preventing potential damage to the crystal or case during decompression. This feature significantly broadened the watch's appeal to professional divers engaged in saturation diving, a technique involving extended periods spent at significant depths.
The increased depth rating wasn't the only significant improvement. The 16660 also featured a larger, more robust case, enhancing its overall durability and wearability. This larger size, compared to its predecessors, provided greater legibility and improved protection for the movement. The movement itself, a caliber 3035, was a workhorse known for its reliability and precision. This automatic movement, a hallmark of Rolex quality, ensured consistent timekeeping even under extreme pressure.
Rolex 16660 Circular Index: A Subtle Yet Significant Difference
One of the key features distinguishing different iterations of the 16660 is the type of indices used on the dial. The circular indices, often referred to as "dot" indices, are a characteristic found on certain versions of the watch, adding a subtle but significant aesthetic difference. These circular indices, typically filled with luminescent material, provide enhanced readability in low-light conditions, a crucial feature for a professional diver's watch. The presence or absence of these circular indices, along with other minor variations, helps collectors identify the specific sub-variants within the 16660 series. The subtle variations in dial markings, while seemingly minor, significantly impact the watch's desirability and value among collectors.
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