Seiko - Grand Seiko 'Serviced' - 6146-8000 - Men - 1968

Offered in this auction by Second Vintage Presenting a spectacular piece of Japanese horological history, this Grand Seiko 61GS perfectly encapsulates the golden era of Seiko’s mechanical dominance. Born in the late 1960s at the Suwa Seikosha facility, this timepiece merges a high-frequency 36,000 bph movement with the legendary "Grammar of Design" case geometry established by Taro Tanaka. With its sharply faceted surfaces, brilliant dial execution, and an exceptionally well-preserved gold caseback medallion, this watch stands as a testament to Grand Seiko's relentless pursuit of precision and aesthetic perfection. It is a highly coveted reference that continues to command immense respect among dedicated vintage collectors. Brand: Seiko Model: Grand Seiko Hi-Beat Reference Number: 6146-8000 Serial Number: 862642 Movement: Automatic Caliber 6146A, 25 Jewels, 36,000 bph Dial: Silver sunburst dial with applied faceted indices, crisp typography, and an exceptionally clean, well-preserved surface Case Size: 37 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1968 Condition: Excellent vintage condition with sharp case architecture and a beautifully preserved dial. Movement has been serviced and performs very strongly. Dial and Hands The silver sunburst dial is a masterclass in mid-century Japanese finishing, reflecting light beautifully across its subtle radial texture. It features highly polished, applied faceted baton indices with a prominent double baton at the twelve o'clock position. The dial furniture includes a crisp, applied "SEIKO" logo at the top, balanced by the iconic applied "GS" logo, "HI-BEAT 36000" text, and the Suwa Seikosha factory symbol printed at six o'clock. A neatly framed day-date aperture sits at three o'clock. The sharp dauphine hands are finished with black central stripes, matching the black sweep seconds hand, providing excellent contrast and legibility. Upon close inspection, the dial is in stunningly clean condition, completely free from moisture damage, staining, or heavy spotting, retaining its factory-fresh appearance with sharp, uninterrupted printing along the bottom edge reading "JAPAN 6146 - 8020T AD". Case and Crystal The 37mm stainless steel case is a brilliant execution of Taro Tanaka’s "Grammar of Design," characterized by its broad, flat polished lugs and sharp, angular flanks. The case retains its factory lines and distinct chamfers exceptionally well, showing only honest, age-appropriate surface scratches and light handling marks that confirm it has not been subjected to heavy, shape-altering polishing. The original GS-signed crown sits flush against the case side. Turning the watch over reveals a pristine screw-down caseback featuring an intact, beautifully crisp solid gold GS medallion. The domed crystal is clear and well-preserved, offering a flawless, distortion-free view of the dial beneath. Movement Powering this timepiece is the legendary Seiko Caliber 6146A, a 25-jewel automatic movement renowned for its high-beat 36,000 vibrations per hour escapement. The movement is proudly stamped with "FIVE ADJUSTMENTS" on the winding rotor, highlighting the chronometer-level standards to which these calibers were held. Visual inspection shows clean bridges, a bright rotor, and a well-maintained balance assembly. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The timegrapher records a rate of -15 to -20 s/day with strong amplitude. Movement has been serviced and performs very strongly. Strap The watch is fitted with a handsome black leather strap featuring contrasting white perimeter stitching. The strap is supple and in great condition, pairing elegantly with the sharp monochrome aesthetic of the steel case and silver dial. Condition This timepiece is presented in excellent vintage condition. The dial is a remarkable highlight, remaining exceptionally clean and free from the degradation or spotting often found in watches of this era. The case is sharp and robust, displaying normal vintage wear while retaining the crucial geometric lines that define the 61GS series. The gold caseback medallion is fully intact and beautifully defined, further confirming the careful preservation of this watch over the decades. Dimensions The case measures 37 mm in diameter, excluding the crown, offering a substantial and distinctly modern presence on the wrist despite its vintage origins. Remarks The Grand Seiko 6146-8000 is a quintessential collector's piece that represents the absolute peak of Seiko's internal competition and mechanical innovation. Finding an example with such a pristine dial, sharp case lines, and an immaculate gold medallion makes this a particularly compelling opportunity for serious enthusiasts of Japanese horology. History Introduced in 1968, the 61GS series was Japan's answer to the high-frequency chronometers of Switzerland. Developed by the Suwa Seikosha branch, the 6146 movement was an engineering marvel, beating at ten ticks per second to provide a smoother sweep and greater positional accuracy. Encased in designs strictly governed by Taro Tanaka's rules of flat surfaces and sharp angles, the 61GS was designed to sparkle brilliantly on the wrist without the need for precious stones. Today, it remains one of the most historically significant and technologically impressive families in the Grand Seiko lineage. / Second Vintage SKU: SEI-SAH-0001