{"product_id":"vintage-seiko-5-automatic-textured-black-dial-day-date-watch-ref-6309-8900-watchex-india","title":"Vintage Seiko 5 Automatic Textured Black Dial Day-Date Watch (Ref. 6309-8900) | Watchex India","description":"\u003cp\u003eA classic vintage Seiko 5 automatic wristwatch featuring a distinctive textured black dial with silver-toned baton markers and matching silver-toned hands. The dial features the iconic SEIKO, 5, and AUTOMATIC branding, along with a practical combined day-and-date display positioned at 3 o’clock.\u003c\/p\u003e\n\u003cp\u003eThe watch is powered by a Seiko Caliber 6309 automatic mechanical movement, a self-winding movement from Seiko’s well-known 6309 series. The day display features a bilingual day wheel, with “LUN” appearing for Monday.\u003c\/p\u003e\n\u003cp\u003eThe watch is housed in a vintage stainless steel case with a screw-down stainless steel case back. The case back carries the reference 6309-8900 and serial number 313241, providing important identification details for this example.\u003c\/p\u003e\n\u003cp\u003eThe watch is fitted with a stainless steel multi-row bracelet with a changed\/replacement clasp. The clasp is not represented as the original factory clasp.\u003c\/p\u003e\n\u003cp\u003eThis example is presented in vintage pre-owned condition, with signs of age and wear consistent with a vintage mechanical watch.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eCollector’s Note\u003c\/p\u003e\n\u003cp\u003eThe Seiko 5 collection has long been associated with practical Japanese automatic watchmaking, combining self-winding mechanical movements with everyday functionality and distinctive period designs.\u003c\/p\u003e\n\u003cp\u003eThis vintage Seiko 5 stands out for its textured black dial, silver-toned furniture, day-date complication and Seiko Caliber 6309 automatic movement.\u003c\/p\u003e\n\u003cp\u003eThe bilingual day display adds an interesting period detail, with “LUN” appearing for Monday.\u003c\/p\u003e\n\u003cp\u003eThe combination of the vintage Seiko case, mechanical movement and black textured dial gives the watch a distinctive vintage character suitable for collectors and enthusiasts of Japanese mechanical watches.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\u003cp\u003e* Brand: Seiko\u003cbr\u003e* Collection: Seiko 5\u003cbr\u003e* Reference: 6309-8900\u003cbr\u003e* Serial Number: 313241\u003cbr\u003e* Movement: Seiko Caliber 6309 Automatic\u003cbr\u003e* Movement Type: Mechanical — Self-Winding\u003cbr\u003e* Dial: Textured Black Dial\u003cbr\u003e* Markers: Silver-Toned Baton Indices\u003cbr\u003e* Hands: Silver-Toned Hands with Sweep Seconds\u003cbr\u003e* Dial Branding: SEIKO + 5 + AUTOMATIC\u003cbr\u003e* Indicators: Day \u0026amp; Date Window at 3 O’clock\u003cbr\u003e* Day Display: Bilingual Day Wheel\u003cbr\u003e* Date Display: Date Window\u003cbr\u003e* Case: Stainless Steel\u003cbr\u003e* Case Back: Screw-Down Stainless Steel Case Back\u003cbr\u003e* Case Diameter: Approx. 36 mm*\u003cbr\u003e* Crown: Original crown position\/design*\u003cbr\u003e* Bracelet: Stainless Steel Multi-Row Bracelet\u003cbr\u003e* Clasp: Changed \/ Replacement Clasp\u003cbr\u003e* Crystal: Mineral Glass*\u003cbr\u003e* Origin: Japan\u003c\/p\u003e\n\u003cp\u003e*Measurements and component specifications are approximate and should be confirmed against the physical watch.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eCase Back\u003c\/p\u003e\n\u003cp\u003eThe original stainless steel case back carries the following identification and period markings:\u003c\/p\u003e\n\u003cp\u003e* SEIKO\u003cbr\u003e* Reference: 6309-8900\u003cbr\u003e* Serial Number: 313241\u003cbr\u003e* Stainless Steel Case Markings\u003cbr\u003e* Period Seiko Case-Back Markings\u003c\/p\u003e\n\u003cp\u003eSerial Number\u003c\/p\u003e\n\u003cp\u003eThe six-digit serial number 313241 follows Seiko’s historical serial-number format.\u003c\/p\u003e\n\u003cp\u003eThe first digit indicates a production year ending in 3, while the second digit indicates January as the production month.\u003c\/p\u003e\n\u003cp\u003eBecause Seiko reused year digits across different decades, the serial number alone cannot conclusively establish the exact production decade.\u003c\/p\u003e\n\u003cp\u003eTherefore, the watch should not be dated to a specific decade solely from the serial number without additional supporting evidence.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eMovement\u003c\/p\u003e\n\u003cp\u003eThe watch is powered by the Seiko Caliber 6309 automatic mechanical movement.\u003c\/p\u003e\n\u003cp\u003e* Caliber: Seiko 6309\u003cbr\u003e* Type: Automatic \/ Self-Winding Mechanical\u003cbr\u003e* Jewels: 17 Jewels*\u003cbr\u003e* Beat Rate: Approximately 21,600 vibrations per hour*\u003cbr\u003e* Function: Timekeeping + Day\/Date\u003c\/p\u003e\n\u003cp\u003eThe movement is wound automatically through normal wrist movement. As with other vintage mechanical movements, performance depends on condition, lubrication and service history.\u003c\/p\u003e\n\u003cp\u003e*Specifications should be verified against the actual movement if the movement has not been inspected.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eDial\u003c\/p\u003e\n\u003cp\u003eThe watch features a distinctive textured black vintage dial with:\u003c\/p\u003e\n\u003cp\u003e* Black textured dial surface\u003cbr\u003e* Silver-toned baton markers\u003cbr\u003e* Matching silver-toned hands\u003cbr\u003e* Sweep seconds hand\u003cbr\u003e* SEIKO branding\u003cbr\u003e* Seiko 5 logo\u003cbr\u003e* AUTOMATIC marking\u003cbr\u003e* Day-date display at 3 o’clock\u003c\/p\u003e\n\u003cp\u003eThe textured dial gives the watch a strong period appearance while maintaining a clean and practical layout.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eDay-Date Function\u003c\/p\u003e\n\u003cp\u003eThe watch features a combined day and date display at 3 o’clock.\u003c\/p\u003e\n\u003cp\u003eThe day wheel includes bilingual day indications, with “LUN” representing Monday.\u003c\/p\u003e\n\u003cp\u003eThis period-style bilingual calendar adds an additional characteristic detail to the watch.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eBracelet \u0026amp; Clasp\u003c\/p\u003e\n\u003cp\u003eThe watch is fitted with a stainless steel multi-row bracelet.\u003c\/p\u003e\n\u003cp\u003eClasp Disclosure\u003c\/p\u003e\n\u003cp\u003eThe clasp has been changed\/replaced and is not represented as the original factory clasp.\u003c\/p\u003e\n\u003cp\u003eThis detail is disclosed for transparency and should be considered when evaluating the overall originality of the watch.\u003c\/p\u003e\n\u003cp\u003eThe bracelet and clasp may show signs of age and previous use. Please inspect the product photographs carefully for the condition of the links, pins, clasp and bracelet fit.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eCondition\u003c\/p\u003e\n\u003cp\u003eVintage Pre-Owned Condition\u003c\/p\u003e\n\u003cp\u003eThe watch is presented in vintage pre-owned condition.\u003c\/p\u003e\n\u003cp\u003eIt retains its vintage Seiko:\u003c\/p\u003e\n\u003cp\u003e* Case\u003cbr\u003e* Dial\u003cbr\u003e* Automatic mechanical movement\u003cbr\u003e* Case back\u003cbr\u003e* Stainless steel bracelet\u003c\/p\u003e\n\u003cp\u003eThe case, crystal, dial and bracelet may show signs of age, light scratches, surface marks and general patina consistent with a vintage mechanical watch.\u003c\/p\u003e\n\u003cp\u003eThe clasp has been changed\/replaced and is not represented as the original factory clasp.\u003c\/p\u003e\n\u003cp\u003eThe mechanical movement is currently running and keeping time; however, vintage mechanical watches can vary in accuracy depending on their service history and internal condition.\u003c\/p\u003e\n\u003cp\u003ePlease refer carefully to all product photographs, as they form an important part of the condition description.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eWhy You’ll Love It\u003c\/p\u003e\n\u003cp\u003e* Classic vintage Seiko 5 automatic design\u003cbr\u003e* Distinctive textured black dial\u003cbr\u003e* Silver-toned baton markers\u003cbr\u003e* Matching silver-toned hands\u003cbr\u003e* Original Seiko Caliber 6309 automatic movement\u003cbr\u003e* Practical day and date display at 3 o’clock\u003cbr\u003e* Bilingual day wheel featuring “LUN”\u003cbr\u003e* Vintage stainless steel case\u003cbr\u003e* Screw-down stainless steel case back\u003cbr\u003e* Reference 6309-8900\u003cbr\u003e* Serial number 313241\u003cbr\u003e* Stainless steel multi-row bracelet\u003cbr\u003e* Changed\/replacement clasp clearly disclosed\u003cbr\u003e* Distinctive Japanese vintage mechanical character\u003cbr\u003e* A characterful addition to a vintage Seiko collection\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003eImportant Note\u003c\/p\u003e\n\u003cp\u003eDue to the age and nature of vintage automatic mechanical movements, timekeeping performance may vary and may not meet the accuracy standards of modern quartz watches.\u003c\/p\u003e\n\u003cp\u003eThe movement should ideally be inspected and serviced by a qualified watchmaker if its recent service history is unknown. Vintage mechanical movements can require periodic servicing to maintain stable performance.\u003c\/p\u003e\n\u003cp\u003eThe watch is currently running and keeping time, but this should not be interpreted as a guarantee of future accuracy or service condition.\u003c\/p\u003e\n\u003cp\u003eAny original water-resistance specifications or markings should not be interpreted as a guarantee of present-day water resistance. Gaskets, seals, crystal, crown and case-back components naturally deteriorate with age.\u003c\/p\u003e\n\u003cp\u003eUnless specifically stated otherwise, this vintage watch has not been pressure-tested and should not be assumed to be water-resistant. Swimming, bathing and diving are not recommended.\u003c\/p\u003e\n\u003cp\u003eThe bracelet should also be inspected for normal vintage wear, including link condition, pin condition, bracelet stretch and clasp security.\u003c\/p\u003e\n\u003cp\u003eThe clasp has been changed\/replaced and is not represented as the original factory clasp.\u003c\/p\u003e\n\u003cp\u003eAll measurements are approximate. Please examine all product photographs carefully before purchase, as photographs form an important part of the condition description.\u003c\/p\u003e","brand":"Watchex India","offers":[{"title":"Default Title","offer_id":67618008662240,"sku":null,"price":3450.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/9776\/9696\/files\/Vintage_Seiko_5_Automatic_Textured_Black_Dial_Day-Date_Watch_Ref._6309-8900_Watchex_India.jpg?v=1790629697","url":"https:\/\/watchexindia.com\/products\/vintage-seiko-5-automatic-textured-black-dial-day-date-watch-ref-6309-8900-watchex-india","provider":"Watchex India","version":"1.0","type":"link"}