Seiko 5 Automatic – Ref. 6309-6010 – Calibre 6309A – Japan 1970s This striking Seiko 5 automatic watch from the 1970s features the robust and reliable Calibre 6309A, one of Seiko’s most iconic automatic movements. The model presents a bold rectangular case and a unique two-tone dial that embodies the futuristic design language Seiko introduced during the late 1970s. ⸻ Technical Details • Brand: Seiko • Model: Seiko 5 Automatic • Reference: 6309 • Movement: Seiko Calibre 6309A, 17 jewels, automatic winding • Case Material: Stainless Steel • Case Diameter: Approx. 38 mm (without crown) • Lug to Lug: Approx. 41 mm • Dial: Two-tone – silver central disc with matte black outer ring, applied indexes, and luminous hands • Functions: Hours, minutes, seconds, day-date (English/other) • Crystal: Acrylic • Crown: Recessed, unsigned • Bracelet: Seiko stainless steel bracelet with signed clasp • Movement Origin: Japan ⸻ Condition This Seiko 5 is in very good overall condition for its age. • The case lines are sharp and the brushed surfaces are beautifully preserved, with professional-level polishing. • The dial is clean, with only minimal age-related patina visible under certain angles. • The crystal shows light marks consistent with age. • The automatic movement runs smoothly and keeps good time for a vintage piece. • Please review all high-resolution photos carefully, as they are part of the description. ⸻ Additional Notes • Excellent timekeeping performance for a vintage Seiko automatic. • No water-resistance guarantee. • Vintage watch handling is recommended: avoid exposure to water, magnetic fields, or shock. • The watch will be carefully packaged, and photo and video documentation will be taken before shipment. • Express shipping via FedEx, UPS, or DHL will be arranged for fast international delivery. • Customs duties, import taxes, and related fees are the responsibility of the buyer. ⸻ Summary A vintage Seiko 5 Automatic 6309-with an eye-catching retro-futuristic design, featuring Seiko’s durable 6309A movement. With its brushed stainless-steel case, two-tone dial, and strong presence on the wrist, this piece represents a perfect blend of 1970s Japanese engineering and timeless style — an excellent addition to any Seiko or vintage watch collection.