The Rolex GMT-Master reference 1675 holds a significant place in horological history, not just for its functionality as a pioneering dual-time watch, but also for its subtle yet significant variations throughout its production run. One of the most visually striking differences between early and later examples lies in the design of the crown guards – the small, protective protrusions flanking the winding crown. Understanding the evolution of these guards, specifically the transition from the pointed ("El Cornino") to the flat crown guards, provides valuable insight into the production timeline of the 1675 and its place within the broader Rolex GMT-Master lineage.
A. The Crown Guard: Pointed vs. Flat
The defining characteristic separating many early 1675s from their later counterparts is the shape of the crown guards. The pointed crown guards, affectionately nicknamed "El Cornino" (little horns in Spanish), are a distinctive feature found on earlier examples of the 1675. These guards extend sharply outward from the case, creating a more angular and prominent profile. This design element adds a certain vintage charm and contributes significantly to the watch's overall aesthetic.
The transition to flat crown guards marks a significant change in the 1675's design language. These later guards are less pronounced, exhibiting a smoother, more streamlined profile that blends more seamlessly with the case. The change isn't merely cosmetic; it reflects Rolex's ongoing refinement of its designs and manufacturing processes. The flat crown guards are generally considered to be more robust and less prone to damage, aligning with Rolex's continuous pursuit of improved durability and functionality.
Pinpointing the exact year of the transition from pointed to flat crown guards is challenging, as Rolex didn't explicitly announce the change, and production overlaps occurred. However, based on extensive research and analysis of numerous examples, it's generally accepted that the changeover began in the mid-1960s, spanning roughly from the late 1960s to the early 1970s. This means that finding a 1675 with pointed crown guards is indicative of a generally earlier production date, while a flat crown guard suggests a later production period within the 1675's lifespan.
Rolex 1675 Reference:
The reference number 1675 itself designates a specific model within the Rolex GMT-Master line. This reference encompasses the various iterations of the GMT-Master with a 39mm Oyster case, acrylic crystal, and the aforementioned variations in crown guard design. The reference number is crucial for collectors and enthusiasts as it allows for precise identification and dating of the watch. While the crown guard design is a key visual identifier, other details, such as the dial, hands, bezel insert, and movement, further refine the dating process. Careful examination of these elements, combined with serial number analysis, allows for a more accurate assessment of a 1675's production year.
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