Seiko - Grand Seiko Special - 6155-8000 - Men - 1971

Available now on auction by Second Vintage The Grand Seiko "Special" represents a pinnacle of Seiko's internal precision standards during the golden age of Japanese watchmaking. Introduced as a higher-tier offering above the standard Grand Seiko line, the Special designation was reserved for movements regulated to even tighter tolerances. This particular example, a reference 6155-8000, embodies the "Grammar of Design" ethos with its sharp, faceted case and pure, unadulterated dial layout. The inclusion of the original GS-signed bracelet makes this a truly compelling package for the discerning collector of vintage Japanese horology. Brand: Seiko Model: Grand Seiko Special Reference Number: 6155-8000 Serial Number: 132767 Movement: Automatic Caliber 6155 Dial: Clean silver sunburst dial with applied indices and GS Special branding Case Size: 36 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1971 Condition: Excellent vintage condition, well-preserved case and dial Dial and Hands The silver sunburst dial is exceptionally well-preserved, exhibiting a clean and radiant finish that catches the light beautifully. The applied, faceted hour indices are sharp and free from oxidation, perfectly complementing the sleek dauphine hands. The typography is crisp, with the prominent "GS SPECIAL HI-BEAT" text and the Suwa Seikosha logo positioned proudly above the 6 o'clock marker. The date aperture at 3 o'clock features a clean, applied metallic frame. The dial appears free from spots, stains, or moisture damage, presenting a stunning visual experience that speaks to careful ownership over the decades. Case and Crystal The 36mm stainless steel case showcases the iconic "Grammar of Design" architecture, with sharp, angular lugs and distinct transitions between the brushed upper surfaces and polished flanks. The case retains its factory lines impressively well, showing only light, honest handling marks consistent with careful wear. The original GS-signed crown is present and crisp. Turning the watch over reveals a beautifully preserved caseback featuring the gold Grand Seiko medallion, which remains intact and highly legible, alongside crisp engravings of the reference and serial numbers. The watch is fitted with its original Hardlex mineral crystal, which is clear and free from significant scratches, allowing an unobstructed view of the pristine dial beneath. Movement Powering this timepiece is the automatic Seiko Caliber 6155, a high-beat movement operating at 36,000 vibrations per hour. The movement photos reveal a clean and well-maintained caliber, with crisp engravings noting "FIVE POS ADJUSTMENTS" and "TWENTY FIVE 25 JEWELS." The rotor and bridges show attractive finishing. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The timegrapher results indicate an exceptional precision of -3 to 8 s/d with strong amplitude. Strap The watch is fitted with its original stainless steel bracelet, featuring a textured brick-link design that matches the era perfectly. The clasp is proudly stamped with the applied GS logo, confirming its authenticity. The bracelet shows light signs of wear but remains tight and highly wearable, accommodating a wrist size up to 17.5cm. Condition This Grand Seiko Special is in excellent vintage condition. The dial is remarkably clean, the case retains its sharp, original geometry with only minor surface wear, and the gold caseback medallion is beautifully preserved. The movement is running with outstanding precision, and the presence of the original GS-signed bracelet completes this highly collectible package. Dimensions Case Size: 36 mm (excluding the crown) Wrist Size: 17.5 cm Remarks A superb example of Seiko's high-beat excellence, this 6155-8000 Special offers a rare combination of sharp case condition, a flawless dial, and its original bracelet. It is a true testament to the enduring quality of vintage Grand Seiko. History Introduced in the late 1960s and early 1970s, the Grand Seiko Special line was created to push the boundaries of mechanical accuracy even further than the already stringent Grand Seiko standard. The 6155 caliber, beating at 36,000 vph, was a marvel of engineering, offering unparalleled precision and a remarkably smooth sweep of the seconds hand. The "Grammar of Design," established by Taro Tanaka, dictated the sharp, faceted case shapes that have become synonymous with the brand, designed to reflect light perfectly from any angle. This model stands as a proud representative of Seiko's dominance in high-precision chronometry during this era. / Second Vintage SKU: SEI-SGS-0001