Rado Chronometer DiaStar (1970-1979)

Now available at auction from Second Vintage This sought-after Rado DiaStar stands out with its chronometer-certified dial and distinctive faceted sapphire crystal. While standard DiaStar models remain familiar to collectors, this chronometer variant offers a compelling iteration of the classic 1970s hardmetal design, complete with the signature rotating anchor logo. Brand: Rado Model: Chronometer DiaStar Dial: Silver-tone with vertical brushing, faceted indices, and red date display Case Size: 36mm (excluding the crown) Case Material: Tungsten carbide top, stainless steel caseback Production Year: 1970s Condition: Fair vintage condition. Timegrapher: -3-5s/day, performing remarkably well. Dial and Hands The patinated chronometer dial features a striking silver-tone surface enhanced by vertical brushing. Applied faceted indices catch the light beautifully, complementing the famous rotating Rado anchor logo positioned against a purple background at 12 o'clock. A vibrant red date display sits neatly at 3 o'clock. The dial shows visible spotting and patina across the surface and edges, adding authentic age-related character. The faceted baton hands display visible oxidation and surface wear. Case and Crystal The case is defined by its highly polished tungsten carbide top, presenting the recognizable DiaStar shield geometry. A significant visible crack is present on the right side of the hardmetal case above the crown. The stainless steel caseback shows typical wear and scratches consistent with its age. The watch features a crown signed with the Rado anchor logo, showing normal wear. A distinctive faceted sapphire crystal, cut with squared facets, protects the dial and appears generally clear with minor surface wear. Movement The 1970s chronometer version of the DiaStar is documented to be powered by a numbered and chronometer-tested ETA 2783 movement. -3-5s/day. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. Strap The watch is fitted with a period correct multi-link stainless steel bracelet secured by an unsigned fold-over clasp. The bracelet shows moderate stretch and surface scratches consistent with age, accommodating a maximum wrist size of 18cm. Condition Fair vintage condition. The watch presents an honest, patinated appearance across its components. The dial displays noticeable spotting and edge patina, while the hands show surface oxidation. The highly polished tungsten carbide case top exhibits a significant visible crack on the right side above the crown, and the stainless steel caseback carries typical scratches. The period correct bracelet displays moderate stretch and wear. The timegrapher reading confirms the movement is performing remarkably well. Dimensions The case measures 36mm (excluding the crown). Remarks This DiaStar represents a sought-after chronometer-certified execution of a highly recognizable 1970s design. The combination of the vertical brushed dial, faceted sapphire crystal, and strong mechanical performance makes this a compelling opportunity for collectors of vintage Rado. History Introduced in the early 1960s, the Rado DiaStar was marketed as the world's first scratch-proof watch, utilizing a highly durable tungsten carbide case. By the 1970s, the model line had expanded to include specialized variants. This chronometer version, powered by a chronometer-tested ETA 2783 movement, represents an elevated tier of the DiaStar family. The distinctive faceted sapphire crystal, often featuring squared facets, became a hallmark of the model's futuristic aesthetic and enduring appeal among vintage enthusiasts. / Second Vintage SKU: RAD-CDX-0001