[Introduction] This Rado DiaStar presents a striking square-cased design that perfectly captures the brand's mastery of avant-garde aesthetics and scratch-resistant materials. Featuring a minimalist black dial with elegant gold-tone accents, this timepiece offers a sophisticated profile that transitions seamlessly from formal events to professional settings. Its iconic DiaStar heritage is evidenced by the sleek case lines and the signature minimalist dial layout, making it a timeless statement of Swiss-made luxury and durability. [Historical & Collector Value] Since its introduction in 1962, the Rado DiaStar has been a pioneer in the watch industry, famously known for being the world's first scratch-proof watch. This specific square reference, 121.9523.3, belongs to a later generation that refined the classic DiaStar toughness into a slimmer, more contemporary dress-watch silhouette. Collectors value these square iterations for their architectural geometry and the way they represent Rado's transition into the "Quartz Revolution" era while maintaining their commitment to high-tech case finishing. Specifications ◇Brand: Rado ◇Model: DiaStar ◇Reference: 121.9523.3 ◇Case size: 25mm (excluding crown) ◇Movement: Quartz ◇Case material: Gold Plated / Stainless Steel Back ◇Dial: Black with Gold-tone Markers ◇Crystal: Sapphire ◇Strap: Black Leather (Crocodile grain) ◇Clasp: Buckle (Rado branded) ◇Country of manufacture: Switzerland ・Condition The watch is in well-preserved condition with light signs of normal wear. The case retains its sharp edges and vibrant gold finish, and the black dial is exceptionally clean. The leather strap is in good condition, and the overall aesthetic remains highly polished and elegant. ・Service History The watch has been checked for basic operation and is functioning at the time of listing. As a quartz timepiece, it provides reliable and accurate timekeeping. As with any pre-owned watch, future maintenance or battery replacement may be required depending on usage and the buyer’s standards. ・Shipping & Customs The item will be carefully packed and shipped from Japan. International shipping is available. Please note that any customs duties, taxes, or import fees are the sole responsibility of the buyer.