Presented for auction by Second Vintage This exceptional timepiece represents the absolute pinnacle of Japanese horology during its golden era, embodying the legendary Grammar of Design principles established by Taro Tanaka. The 61GS series is celebrated by collectors worldwide for introducing a high-frequency automatic caliber to the prestigious Grand Seiko lineage, combining peerless mechanical precision with a case architecture that catches the light from every conceivable angle. This specific example beautifully showcases the sharp, faceted geometry and refined elegance that put Swiss watchmaking on notice in the late 1960s. Brand: Seiko Model: Grand Seiko Reference Number: 6146-8000 Serial Number: 841166 Movement: Automatic Caliber 6146A, 25 Jewels Dial: Silver sunburst dial with applied faceted indices, presenting in clean condition with light, even signs of age consistent with careful use Case Size: 37 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1968 Condition: Stunning vintage condition, featuring a well-preserved dial and sharp case geometry, with honest wear to the caseback medallion Dial and Hands The dial of this Grand Seiko is a masterclass in mid-century restraint and finishing, featuring a subtle silver sunburst texture that radiates beautifully under light. It presents in clean, honest condition with light, even wear visible upon close inspection, consistent with its age, and free from any major distractions such as significant spotting or moisture damage. The applied faceted hour markers are meticulously polished and feature a central black stripe to enhance legibility, perfectly matching the sharp, faceted dauphine hands. The applied Seiko and GS logos at twelve and six o'clock add striking dimensionality to the dial, while the sans-serif printed Grand Seiko text and Suwa factory symbol remain crisp and intact. A faceted metal frame secures the day and date aperture at the three o'clock position. The extreme lower edge bears the factory text JAPAN 6146 -8000T AD, completely legible. Case and Crystal The stainless steel case is a brilliant representation of the iconic Grammar of Design, characterized by wide, flat, high-polished flanks and sharply angled lugs. The transitions between the brushed upper lug surfaces and the mirror-polished sides remain remarkably well-defined, indicating careful preservation over the decades. Honest signs of vintage wear, including light surface scratches and handling marks, are present but do not detract from the striking architectural profile. The watch retains its correct GS-signed crown nested neatly at the three o'clock position. Turning the watch over reveals the solid caseback, featuring the original gold Grand Seiko medallion. The medallion exhibits visible pitting and surface degradation around its edges, which is a highly common and honest sign of age for this specific component, while the surrounding engraved reference and serial numbers remain deep and entirely legible. A clear raised crystal protects the dial, showing minimal wear and allowing an unobstructed view of the display beneath. Movement Powering this timepiece is the esteemed Seiko Caliber 6146A, a 25-jewel automatic movement renowned for its sophisticated engineering and high-beat frequency. Close inspection of the movement reveals clean, brushed finishing across the rotor and upper bridges, with the caliber designation and jewel count clearly stamped into the metal. The movement is noted to have been serviced on May 24, 2026. Exhibiting solid accuracy and consistency for a vintage timepiece, the timegrapher indicates a deviation of -15 to -18 seconds per day. Strap The watch is fitted with a classic black leather strap featuring a subtle reptile-grain texture and matching black stitching. The strap is supple and complements the formal yet versatile nature of the watch, securing to the wrist with a traditional polished stainless steel pin buckle. Condition This Grand Seiko is graded in strong vintage condition. The dial and handset remain attractive and well-preserved overall, showing only light, age-appropriate wear. The case retains its crucial factory geometry with sharp lug chamfers and well-defined flat planes, showing normal handling marks. The gold caseback medallion shows localized pitting and wear, a standard characteristic of vintage Grand Seiko preservation. Overall, it is a highly appealing and honest collector's piece. Dimensions Case Size: 37 mm (excluding the crown) Remarks The 6146-8000 is widely considered one of the most desirable vintage Grand Seiko references, perfectly capturing the aesthetic and mechanical ambitions of the brand. Examples with clean, honest dials and sharp case lines are increasingly difficult to find, making this a compelling opportunity for both dedicated Seiko enthusiasts and discerning collectors of important vintage horology. History Introduced in 1960, Grand Seiko was born from a singular corporate mandate to create the ideal watch, one that could rival and surpass the finest chronometers produced in Switzerland. By the late 1960s, the brand had fully realized this goal with the introduction of the 61GS series. Powered by a high-beat automatic movement operating at 36,000 vibrations per hour, the 61GS offered unprecedented stability and accuracy. Encased within Taro Tanaka's revolutionary Grammar of Design architecture, which prioritized flat surfaces and perfect mirror polishing, the 6146-8000 stands as a monument to Seiko's absolute mastery of both mechanical innovation and exterior finishing during the twentieth century. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and very securely packaged, and shipped with tracking and insurance for your peace of mind. We ship via fast express service, with typical delivery in 1–4 business days (destination dependent). Note that with vintage watches, minor signs of wear, aging, or imperfections may be present and are considered normal for watches of this age. Please review all photos carefully before bidding. We strive to photograph each watch from multiple angles for the most accurate representation. The photos form an important part of the description. If there are any concerns of functionality or defects after delivery, make sure to contact us within 3 days of receiving the watch so we can assist you. As with all vintage watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: SEI-SGG-0001