Seiko Seikomatic-R 8306-8000 (1965)

Offered in this auction by Second Vintage A highly attractive and sophisticated example of mid-century Japanese horology, this Seiko Seikomatic-R perfectly captures the elegance of the 1960s. Featuring a pristine silver sunburst dial and a remarkably clean 30-jewel automatic movement, this timepiece is a testament to Seiko's golden era of mechanical watchmaking. The integrated day and date complication alongside the elegant case proportions make it an exceptionally versatile and desirable collector's piece. Brand: Seiko Model: Seikomatic-R Reference Number: 8306-8000 Serial Number: 5000604 Movement: Automatic Caliber 8306A, 30 Jewels Dial: Silver sunburst with applied indices and day-date display Case Size: 34 mm Case Material: Stainless Steel Production Year: 1965 Condition: Excellent vintage condition. The watch is very well preserved for its age, showcasing a remarkably clean dial and honest case. Timegrapher results show +45 to +48 seconds per day, which indicates a healthy movement offering reliable vintage performance. Dial and Hands The silver sunburst dial is exceptionally preserved, reflecting light beautifully and maintaining a bright, clean aesthetic. It features prominent applied block indices with crisp black inserts, perfectly matched by the elegant dauphine hands. A framed day and date window sits cleanly at the three o'clock position. The dial is signed with a raised Seiko logo, Seikomatic-R, and Diashock 30 Jewels, representing top-tier finishing for the era. Case and Crystal The 34 mm stainless steel case remains well-defined, showing only light handling marks and acceptable vintage wear that are completely consistent with its age. The classic lines and lug shape present wonderfully on the wrist. The caseback retains its deeply engraved Seiko dolphin motif, denoting its original waterproof status, along with crisp serial and reference numbers. The crystal is clear and free of significant marks, offering an unobstructed view of the stunning dial beneath. Movement Powering this elegant timepiece is the Seiko automatic caliber 8306A, a highly regarded movement featuring 30 jewels and Diashock shock protection. As seen in the images, the movement is visually very clean with bright plates and a signed rotor. Timegrapher testing indicates the watch is running between +45 and +48 seconds per day, which indicates a healthy movement offering reliable vintage performance. Strap The watch is fitted with a handsome deep blue leather strap featuring an alligator-style grain and matching blue stitching. The strap provides a refined contrast to the silver dial and is secured with a classic steel tang buckle, ensuring comfortable daily wear. Condition This Seikomatic-R is presented in excellent vintage condition. The dial and hands are remarkably fresh, showing minimal signs of aging. The case exhibits honest, light wear with well-preserved lines and a highly legible caseback engraving. The movement looks exceptionally clean and is running strongly. Overall, it is a highly attractive and well-above-average example of a classic 1960s Seiko. Dimensions The classic stainless steel case measures 34 mm in diameter excluding the crown. Remarks This Seikomatic-R reference 8306-8000 represents a wonderful opportunity to acquire a high-jewel count vintage Seiko with a spectacular dial presence. The combination of the sophisticated 8306A movement and the elegant mid-century design makes this a compelling addition to any serious vintage collection. History The Seikomatic line was introduced in the early 1960s as Seiko's premium automatic offering, aimed at business professionals who demanded both elegance and reliability. The "R" designation indicated a refined, high-grade extension of the series, often featuring advanced movements with higher jewel counts like the impressive 30-jewel caliber found in this model. Produced in October 1965, this piece stands as a proud representative of Seiko's rapid mid-century evolution, paving the way for the brand's enduring global legacy in fine mechanical watchmaking. / Second Vintage SKU: SEI-SMJ-0021