SEIKO 5 6306-8020 Automatic 21 Jewels Day-Date Gold-Tone Vintage Watch Introduction This vintage Seiko 5 6306-8020 is a classic Japanese automatic wristwatch featuring a silver dial, gold-tone case, applied hour markers, and a practical day-date display at 3 o’clock. The combination of a traditional round case, clean three-hand layout, and warm gold-tone exterior gives the watch an elegant vintage appearance. With its mechanical automatic movement and familiar Seiko 5 design language, it is an appealing piece for collectors of vintage Japanese watches. Historical & Collector Value The Seiko 5 family has long represented Seiko’s practical approach to mechanical wristwatches, combining automatic winding with useful calendar functions and straightforward everyday design. The 6306 series is of particular interest to vintage Seiko enthusiasts because of its Japanese automatic movement and 21-jewel configuration. This example retains the characteristic Seiko 5 logo, day-date display, and period styling that make these watches recognizable to collectors. This watch is not presented as a limited edition or exceptionally rare reference. Its collector appeal comes from its vintage Seiko 5 identity, 6306 automatic movement, 21-jewel specification, day-date function, and classic Japanese design. Specifications - Brand: Seiko - Collection: Seiko 5 - Reference number: 6306-8020 - Movement: Automatic mechanical - Jewels: 21 jewels - Display: Three hands with day and date - Dial colour: Silver - Case colour: Gold tone - Case back: Stainless steel back - Case size: Approximately 37.6 mm, including the crown - Lug width: Approximately 18 mm - Strap: Red-brown leather-style strap shown in the photographs - Operating condition: Running - Crown operation: Confirmed - Day-date adjustment: Confirmed - Time setting: Confirmed - Accessories: None - Box and papers: Not included All measurements were taken manually and may vary slightly. The exact case material, strap material, and originality of the strap and individual exterior components have not been independently confirmed. Condition This is a used vintage watch with visible signs of age and previous use. The case shows scratches, dirt, tarnishing, rubbing, plating wear, and other age-related marks. The crystal also has scratches and dirt. The silver dial appears relatively clean overall, although minor marks, ageing, or small imperfections may be present. The hands, applied hour markers, day-date display, and Seiko 5 markings remain clearly visible. The crown can be pulled to the first position, and both the day and date could be adjusted. At the second position, the hands could be adjusted for time setting. The seconds hand begins to move when the watch is shaken. Detailed testing of daily accuracy, power reserve, long-term operation, and internal movement condition has not been carried out. Please examine all photographs carefully for the exact cosmetic condition. This is a pre-owned / vintage watch. It has signs of use such as scratches, small marks, fading, and wear due to age. Please check all photos carefully, as they are an important part of the description. The watch is running at the time of listing. Time setting and basic functions have been checked unless otherwise stated. Long-term accuracy has not been tested. As this is a used/vintage watch, maintenance or overhaul may be required after purchase. Water resistance is not guaranteed, even if the case or dial has water-resistance markings. Only the items shown in the photos are included. If box, papers, spare links, or accessories are not shown or mentioned, they are not included. Please understand that the condition of vintage watches can be subjective. I describe the item as accurately as possible, but minor signs of age and use should be expected. Service History The watch has been confirmed to start running when shaken. The crown operation, day-date adjustment, and time setting have also been checked. No service or maintenance records are available. Daily accuracy, power reserve, long-term continuous operation, and the internal condition of the movement have not been tested. Shipping & Customs The watch will be carefully packed and shipped internationally with tracking where available. Any customs duties, import taxes, VAT, handling charges, or other fees imposed by the destination country are the buyer’s responsibility. These charges are not included in the purchase price or shipping cost. IMPORTANT – Customs & Import Taxes If customs duties / VAT are not paid by the buyer, the parcel cannot be delivered and will be returned. In such cases, the sale will not be refunded. Please make sure to pay all customs charges promptly.