The Rolex Submariner reference 1680 holds a special place in the hearts of watch enthusiasts. This iconic timepiece, produced from 1966 to 1979, represents a significant chapter in Rolex's history, a period of evolution and refinement that cemented the Submariner's status as a legendary dive watch. While often discussed for its striking aesthetics, including its distinctive bezel variations and diverse dial designs, the heart of the 1680 lies within its movement: the Caliber 1575. This article delves deep into the specifics of the Caliber 1575, exploring its technical features and significance within the context of the broader 1680 lineage, while also addressing the collector's market and its various iterations.
The Caliber 1575, the engine powering the majority of the Rolex Submariner 1680 models, is a robust and reliable automatic movement. It's important to correct a common misconception: the 1680 was *not* powered by the Caliber 1680. That number refers to the reference number of the watch itself, not the movement. The 1575 is a direct descendant of the Caliber 1570, inheriting its fundamental design and construction. This lineage speaks volumes about Rolex's commitment to proven technology, constantly refining and improving upon existing platforms. The 1570, itself a highly regarded movement, laid the groundwork for the enhanced features found in the 1575.
The Caliber 1575 operates at a frequency of 19,800 beats per hour (BPH), a standard for many Rolex movements of that era. This frequency offers a balance between accuracy and power reserve. While not as high as some modern movements, the 19,800 BPH was considered sufficient for reliable timekeeping, even under demanding conditions. More importantly, the 1575 boasts a crucial feature: a quickset date function. This allows for convenient and rapid adjustment of the date, a significant improvement over earlier movements requiring the crown to be turned multiple times to advance the date. This seemingly small detail enhanced the user experience significantly, making the watch more practical for everyday use.
Beyond the quickset date, the Caliber 1575 also incorporated a date display window, a staple feature of modern dive watches. This clear and easily readable date window provided essential information for divers and everyday wearers alike. The combination of these features—the robust construction, the reliable 19,800 BPH frequency, and the convenient quickset date—solidified the Caliber 1575's reputation as a workhorse movement capable of withstanding the rigors of daily wear and even extreme environments.
However, the Caliber 1575 wasn't the only movement found within the Submariner 1680. Some early examples featured the Caliber 1570, offering a slight variation in the movement's evolution. Understanding these subtle differences is crucial for collectors seeking specific examples. The transition from the 1570 to the 1575 reflects Rolex's ongoing commitment to refinement and improvement, a hallmark of the brand's enduring success.
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