Seiko Seikomatic-R 8306-8000 (1965)

Now available at auction from Second Vintage Presented in classic mid-1960s proportions, this Seikomatic-R stands out through its exceptionally clean silver sunburst dial and the distinctive dolphin motif engraved on its caseback. Powered by the 30-jewel automatic caliber 8306A, the watch delivers a refined dress aesthetic with crisp applied indices and a practical day-date complication, offering a highly attractive example of Seiko's mid-century design language. Brand: Seiko Model: Seikomatic-R Reference Number: 8306-8000 Serial Number: 5800479 Movement: Automatic, caliber 8306A, 30 jewels Dial: Silver sunburst with applied indices and day-date Case Size: 36 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1965 Condition: Good vintage condition. Timegrapher: +60+62s/day, running in operational condition. Dial and Hands The silver sunburst dial is exceptionally clean and attractive, remaining beautifully preserved. The applied indices are bright, and all printing is crisp and intact across the surface. A clean day and date window, displaying in English, sits at the three o'clock position. The silver-tone Dauphine style hands are well-preserved and perfectly match the dial, remaining bright with only minimal signs of oxidation visible under magnification. Case and Crystal The stainless steel case features a polished finish throughout, presenting honest wear consistent with its age. Moderate scratches and minor dings are visible on the lugs and flanks. The smooth polished bezel shows light scratches and minor wear that align with the condition of the case. Turning the watch over reveals a caseback that retains clear engravings, including the charming dolphin motif, while showing typical surface wear. An unsigned knurled crown is fitted, which appears functional and in good condition. The domed acrylic crystal is clear, with no significant scratches or crazing visible. Movement Inside beats the 30-jewel Seiko caliber 8306A automatic movement. The caliber appears generally clean, showing no severe corrosion or visible damage, though some minor cosmetic wear is present on the edge of the rotor. The engravings reading SEIKO, 30 JEWELS, JAPAN, and 8306A remain clearly defined. Recording +60+62s/day on the timegrapher. Running in operational condition. Maintains the authentic mechanical character of the watch. Strap The watch is fitted with a black leather strap featuring white contrast stitching. The strap appears new or very lightly used, providing an attractive pairing for the bright silver dial. Condition Good vintage condition. The dial and hands are exceptionally clean and well-preserved. The polished stainless steel case displays honest wear, with moderate scratches and minor dings on the lugs and flanks, while the caseback retains its clear dolphin engraving despite typical surface wear. Running in operational condition. Maintains the authentic mechanical character of the watch. Dimensions The case measures 36 mm, excluding the crown. Remarks This Seikomatic-R is a highly appealing timepiece defined by its pristine silver sunburst dial and crisp applied indices. The presence of the distinctive dolphin caseback engraving adds a wonderful touch of character, making it a lovely mid-1960s dress watch for any enthusiast. History The Seikomatic-R line was a key part of Seiko's catalog during the mid-1960s, offering elegant designs paired with refined automatic movements. The 8300 series calibers, including the 30-jewel 8306A, provided reliable day and date functionality within a relatively slim profile. These models reflect the clean, purposeful design ethos that defined Seiko's mid-century output, resulting in highly wearable timepieces that remain appreciated by collectors today. / Second Vintage SKU: SEI1W21700000