The Rolex Oyster Perpetual GMT-Master, a watch synonymous with global travel and enduring style, holds a special place in horological history. This article delves into the specifics of a particular example, a 1978 GMT-Master reference 1570, focusing on its unique features and placing it within the broader context of the GMT-Master lineage. This specific piece, boasting a 14K gold and stainless steel Rolex Oyster riveted bracelet with a deployant clasp stamped USA 78 and an overall length of approximately 200mm, represents a compelling snapshot of a pivotal era in Rolex's production.
The reference 1570, produced from 1959 to 1988, represents a significant transitional phase in the GMT-Master's evolution. Preceding the more widely recognized and currently produced references, like the modern GMT-Master II, the 1570 showcases a blend of classic design elements and the robust functionality that defines the GMT-Master line. Understanding this particular 1978 example requires appreciating the broader history and variations within the GMT-Master family, allowing us to contextualize its value and appeal.
Rolex GMT Master Time Zone Functionality:
The core function of any GMT-Master, and indeed the defining characteristic of the reference 1570, is its ability to display two time zones simultaneously. This is achieved through the use of a 24-hour hand, independent of the standard hour, minute, and second hands. This 24-hour hand, often referred to as the GMT hand, can be independently adjusted, allowing the wearer to track a second time zone – typically their home time – while simultaneously observing the local time. This feature made the GMT-Master a highly sought-after tool watch, particularly for pilots and frequent international travelers. The simplicity and effectiveness of this dual-time function remain a hallmark of the GMT-Master's enduring popularity. The 1978 1570, with its robust movement, ensures precise tracking of both time zones, a testament to Rolex's commitment to accuracy and reliability.
Rolex GMT Master 11 Price and Market Value:
The price of a Rolex GMT-Master, particularly a vintage model like the 1978 1570, is influenced by several factors. Condition, originality, box and papers (original documentation), and the overall desirability of the specific reference all contribute to its market value. While the general Rolex GMT-Master 11 price range can be researched online through various auction sites and reputable dealers, the price of a specific 1978 1570 will be determined by its individual characteristics. The combination of 14K gold and stainless steel, often referred to as "Rolesor," adds to its value, as this bi-metallic construction was a popular choice during this era. The excellent condition of the bracelet, with its original riveted construction and deployant clasp stamped USA 78, further enhances its desirability and collectibility. The rarity of finding a 1570 in this condition, with its complete bracelet, significantly impacts its price, placing it at a premium compared to those with damaged or replaced components. The overall length of approximately 200mm also plays a role, as it suggests a suitable fit for a wide range of wrist sizes.
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