Seiko - Business-A 威紋 (Imon) – Pattern of Power - No reserve price - 8346-8000 - Men - 1967

Available now on auction by Second Vintage This exceptional 1967 Seiko Business-A is a quintessential example of the brand's mid-century dominance in producing high-quality timepieces for the professional market. Designed during a golden era of Japanese watchmaking, this reference 8346-8000 combines a highly unique day-date layout with an elegant "beads of rice" bracelet, creating a sophisticated silhouette on the wrist. With its distinctive textured hour markers and reliable 27-jewel automatic movement, this timepiece represents a fantastic opportunity for collectors to acquire a piece of Seiko history that perfectly balances functionality with vintage style. Brand: Seiko Model: Business-A Reference Number: 8346-8000 Serial Number: 7400261 Movement: Automatic Caliber 8346A Dial: Silver sunburst with textured indices Case Size: 36 mm Case Material: Stainless Steel Production Year: 1967 Condition: Good vintage condition. The watch presents honestly with visible wear to the case consistent with its age, while the dial remains in remarkable condition. Timegrapher results show the movement is running between +35 and +43 seconds per day, indicating a healthy mechanism. Dial and Hands The silver sunburst dial is the highlight of this timepiece, preserved in stunning condition with a bright and clean finish. It features distinctive applied block indices with a unique cross-hatched texture that catches the light beautifully. The dauphine hands are sharp and legible. A defining feature of this model is the "Weekdater" layout, displaying the full day of the week in a window at the 9 o'clock position and the date at 3 o'clock, creating a balanced and symmetrical aesthetic. Case and Crystal The 36mm stainless steel case features the classic architectural lines typical of late 1960s Seiko design, with a recessed crown integrated into the case side at the 4 o'clock position for a streamlined profile. The case shows visible signs of use, including scratches and dings on the lugs and bezel, which is expected for an unpolished vintage piece of this era. The screw-down caseback clearly displays the reference and serial numbers along with the horseshoe text, retaining its historical engravings. The crystal is clear and presents well. Movement Powering the watch is the robust Seiko Caliber 8346A automatic movement, a 27-jewel mechanism known as the "Diashock" for its shock resistance. The movement appears clean and free of corrosion. Based on provided testing, the watch is running with a variance of +35 to +43 seconds per day, which is within acceptable operating limits for a vintage mechanical watch of this period without recent service. Strap The watch is fitted with a stainless steel "beads of rice" style bracelet that complements the vintage character of the watch perfectly. The bracelet is flexible and comfortable, featuring a signed Seiko clasp. It shows normal stretch and wear consistent with the watch head, completing the cohesive vintage look. Condition This timepiece is graded in good vintage condition. While the stainless steel case and bracelet show evident wear marks, scuffs, and scratches typical of a watch that has been enjoyed for over five decades, the dial remains exceptionally clean and attractive. The preservation of the dial and hands elevates the overall appearance, making it a very presentable daily wearer with genuine character. Dimensions The case measures 36 mm in diameter excluding the recessed crown. The lug width and bracelet integration provide a classic fit suitable for a wide variety of wrist sizes. Remarks The Seiko Business-A series was marketed towards the rising class of Japanese "salarymen" in the 1960s, offering a blend of durability and elegance. The reference 8346-8000 is particularly desirable due to its intricate dial markers and the unusual placement of the day window. This specific example, manufactured in April 1967, stands out for its honest condition and the presence of its matching bracelet. History Seiko's production in the late 1960s is often cited by collectors as a high-water mark for the company, where mass production met high-quality finishing. The 8300 series of movements were developed to offer high jewel counts and reliable automatic winding performance. The Business-A line sat alongside the Seikomatic and Presmatic lines, offering specialized designs that have since become cult classics among vintage Japanese watch enthusiasts. / Second Vintage SKU: SEI5JRP9V0000