The Rolex reference number 25.285 doesn't represent a complete watch model in the traditional sense. Instead, it designates a specific component: a sapphire crystal replacement for certain vintage Rolex Sea-Dweller models, specifically the 16600 and 16660. Understanding this nuance is crucial to appreciating the significance and the search surrounding the Rolex 25.285. This article delves into the details of this sapphire crystal, its compatibility, its importance in restoration, and the challenges involved in sourcing it.
The description "Cristal de zafiro Rolex Tropic 25285 sin junta de lente incluida" – translated as "Rolex Tropic 25285 sapphire crystal without lens gasket included" – immediately clarifies its purpose. It's a replacement sapphire crystal, specifically designed for the "Tropic" style crystal found on several vintage Rolex Sea-Dweller models. The absence of the lens gasket highlights a common issue with sourcing these parts: often, the crystal is sold separately, requiring the owner to source the gasket independently, adding complexity and cost to the restoration process. This necessitates a deeper understanding of vintage Rolex parts and the intricacies of watch repair.
The Significance of the "Tropic" Crystal
The term "Tropic" refers to the specific type of acrylic crystal commonly found on vintage Rolex dive watches, including the Sea-Dweller 16600 and 16660. These crystals are known for their characteristic dome shape and the way they magnify the dial, contributing to the unique aesthetic of these iconic timepieces. However, acrylic crystals are susceptible to scratching and degradation over time, leading many owners to seek out replacement sapphire crystals for improved durability and scratch resistance. This is where the Rolex 25.285 comes into play.
The sapphire crystal, being significantly harder than acrylic, offers superior protection against scratches. This is especially important for a dive watch that might endure harsh conditions. The Rolex 25.285, therefore, represents an upgrade path for owners seeking to preserve the aesthetic while enhancing the durability of their vintage Sea-Dweller.
Compatibility and Dimensions
The description emphasizes the crystal's dimensions: "Ø Ext. (mm) Espesor de vidrio Altura total Altura de la junta Lente de calendario" – external diameter (in millimeters), glass thickness, total height, gasket height, and calendar lens. These precise measurements are crucial for ensuring compatibility with the specific watch model. The diameter, often cited as approximately 29.40mm, is paramount. A slight discrepancy in size can render the crystal unusable, leading to potential damage to the watch case or an imperfect fit.
The reference to the "calendar lens" underscores the fact that this crystal is designed for Sea-Dwellers with a date function. The crystal's design accommodates the date window, a critical aspect of compatibility. The absence of specific measurements in the provided text highlights the importance of confirming the exact dimensions from a reputable supplier before purchase. Improperly sized crystals can cause significant issues, making it crucial to source the part from a trusted vendor with detailed specifications.
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