Presented for auction by Second Vintage A quintessential 1970s Rado DiaStar featuring its signature faceted crystal and highly resilient tungsten case. The DiaStar is celebrated for its pioneering use of scratch-resistant materials and retro-futuristic design, making it a highly compelling model for vintage enthusiasts. Brand: Rado Model: DiaStar Reference Number: 1-623.0001.3 Serial Number: 1162599 Movement: Mechanical Dial: Brown sunburst with red date display Case Size: 35 mm (excluding the crown) Case Material: Tungsten Carbide and Stainless Steel Production Year: 1970s Condition: Good vintage condition. Timegrapher: +3+5s/day, performing remarkably well. Dial and Hands The dial features a striking brown sunburst center that remains vibrant, contrasting with an outer minute track chapter ring that shows significant degradation, spotting, and finish loss. The applied Rado logo, DiaStar text, and date window frame display moderate oxidation and patina. The watch is fitted with baton hands retaining aged luminous material, which exhibit visible oxidation and spotting across their metal surfaces. Case and Crystal The geometry of the case remains sharp and well-defined, highlighted by the highly scratch-resistant tungsten carbide top shield that is in excellent condition with minimal wear. The integrated tungsten shield is exceptionally clean and free of major marks. The stainless steel caseback and flanks show light surface scratches consistent with normal use. The watch features a signed crown bearing the Rado anchor logo, with well-defined ridges showing light wear. Above the dial sits a distinctive faceted sapphire crystal that is clear and well-preserved, with no major scratches or chips visible. Movement The watch is powered by a mechanical movement. The timegrapher records a rate of +3+5s/day. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. Strap The watch is fitted with its original signed bracelet in stainless steel. The links and clasp show honest wear with moderate surface scratches visible throughout. The clasp is clearly signed with the Rado name and anchor logo. The bracelet accommodates a maximum wrist fit of up to 17.5cm. Condition Good vintage condition. The tungsten carbide top shield and faceted sapphire crystal are exceptionally well-preserved. The stainless steel case components and original bracelet show moderate surface scratches from normal use. The dial presents a vibrant brown sunburst center, while the outer chapter ring displays significant degradation and finish loss, alongside visible oxidation on the hands and applied markers. Supported by the recorded timegrapher data, the movement is performing very strongly. Dimensions The case measures 35 mm (excluding the crown). Remarks This DiaStar delivers a striking aesthetic through its faceted sapphire crystal and resilient tungsten case. The combination of its vibrant brown dial center and original signed bracelet makes it a compelling choice for collectors of distinctive 1970s design. History The Rado DiaStar is highly recognized and celebrated for its pioneering use of scratch-resistant materials and retro-futuristic styling. By introducing tungsten carbide cases and sapphire crystals to the market, Rado created a watch designed to withstand the rigors of daily wear while maintaining a polished appearance. This specific model line reflects a bold period in horological design, remaining a collector favourite for its unique geometry and innovative engineering. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind. We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination. Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age. We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description. The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use. If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you. As with all used watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: RAD-DXX-0004