Seiko Business-A 琴羽 (Kotoba) 8306-8001 (1967)

Now available at auction from Second Vintage A good preserved example of Seiko's renowned craftsmanship, this Seiko Business-A ref. 8306-8001 offers a harmonious blend of mid-century sophistication and reliable daily utility. Showcasing a rich sunburst charcoal dial with applied indices and a crisp day-date display, this timepiece captures a classic Seiko aesthetic paired with subtle vintage character. Its stainless steel case maintains its defined lines and original proportions, making this watch an exceptional choice for collectors and those seeking timeless style in a wearable size. The included recent timegrapher reading underscores its remarkable mechanical health—making it both a practical and highly collectible vintage Seiko. Brand: Seiko Model: Business-A Reference Number: 8306-8001 Serial Number: 7202170 Movement: Automatic (Seiko, original to the period) Dial: Charcoal sunburst, applied silver indices, framed day-date at 3 o’clock Case Size: 35 mm (excluding the crown) Case Material: Stainless steel Production Year: 1967 Condition: Honest vintage condition with appealing dial patina and well-preserved case; running at +18 to +23 seconds per day on the timegrapher, a strong result for a watch of this age. Dial and Hands The charcoal sunburst dial has developed a pleasing, authentic patina that testifies to its age while remaining distinctly clean and readable. The applied silver indices and matching dauphine hands interact elegantly with the light, while the hands and luminous plots have aged gracefully, contributing character and charm. The day-date window at 3 o’clock is sharply defined, with clear, original printing. Case and Crystal The 35mm stainless steel case displays strong lines and sharp lugs with light, even wear consistent with careful use over decades. There are minimal surface marks, and the profile remains true to the original design. The acrylic crystal is clear and free from major blemishes, providing an unobstructed view of the handsome dial. Movement Driven by a reliable Seiko automatic movement, this watch is performing at +18 to +23 seconds per day per timegrapher readings, indicating healthy movement and dependable vintage performance. Strap Paired with a supple brown leather strap that complements the vintage look and is comfortable for immediate wear. Condition This Seiko Business-A remains in honest vintage condition. The dial, case, and hands show tasteful signs of age and pleasing patina. The watch runs within healthy vintage tolerances, supported by an excellent timegrapher result. Dimensions Case diameter: 35 mm (excluding the crown) Remarks A striking example of late-1960s Seiko design and reliability, this Business-A stands out for its robust movement, sharply preserved case, and richly patinated dial. It is an ideal acquisition for collectors seeking understated vintage style with enduring mechanical quality. History Introduced as part of Seiko’s push for refined, reliable mechanical watches, the Business-A line became synonymous with everyday dependability and subtle elegance. The 8306-8001 iteration is particularly valued for its day-date complication and classic proportions, making it a coveted model among vintage Seiko enthusiasts. / Second Vintage SKU: SEIB7MFI60000