[Introduction] This Rado DiaStar is a stunning example of the brand’s pioneering spirit in material science and avant-garde design. Featuring a distinct square tungsten carbide case, it offers an incredible mirror-like finish that is virtually scratch-proof. The black dial is elegantly accented with gold-tone hands and markers, including two sparkling stones at the 6 and 12 o'clock positions, creating a luxurious contrast. This timepiece perfectly captures Rado's signature "Master of Materials" philosophy in a compact and sophisticated silhouette. [Historical & Collector Value] The DiaStar line, first introduced in 1962, revolutionized the watch industry as the world's first scratch-proof watch. This specific reference continues that heritage, utilizing high-tech materials that ensure the watch looks as new today as it did decades ago. Collectors value the DiaStar for its unique industrial design and its role in establishing Rado as a leader in innovative aesthetics. The combination of its iconic square case and the enduring luster of its tungsten construction makes it a highly recognizable and sought-after piece of Swiss horological history. Specifications ◇Brand: Rado ◇Model: DiaStar ◇Reference: 204.0268.3 ◇Case size: 20 mm ◇Movement: Quartz ◇Case material: Tungsten Carbide / Stainless Steel ◇Dial: Black with gold-tone accents and two stones ◇Crystal: Sapphire ◇Bracelet / Strap: Stainless Steel / Gold-plated links ◇Clasp: Fold-over clasp with Rado branding ◇Water resistance: Water Sealed (as marked on caseback) ◇Country of manufacture: Switzerland ・Condition The watch is in excellent condition with minimal signs of use. Due to the high-tech tungsten carbide construction, the case remains exceptionally clean and retains its original brilliant luster. The black dial and sapphire crystal are in pristine condition. The bracelet shows only very light surface wear, consistent with careful handling. ・Service History The watch has been checked for basic operation and is functioning accurately at the time of listing. As a quartz timepiece, it provides reliable timekeeping. Future maintenance may be required depending on usage and the buyer’s standards. ・Shipping & Customs The item ships from Japan, carefully packed to ensure safe arrival. International shipping is available. Please note that customs duties, taxes, and related charges are the buyer’s responsibility and are not included in the item price.