[Introduction] The Seikomatic Weekdater is a definitive icon of Seiko’s mid-1960s lineup, representing a pivotal era in Japanese automatic watchmaking. This 6206-8990 model features a clean silver sunray dial with a sophisticated layout that places the day window prominently at 6 o’clock and the date at 3 o’clock. Its stainless steel construction and refined dauphine hands embody a timeless mid-century aesthetic, offering a perfect blend of high-end utility and understated elegance for the vintage enthusiast. [Historical & Collector Value] Introduced as a high-tier automatic line, the Seikomatic was Seiko’s premier self-winding watch before the full integration of the Grand Seiko and King Seiko automatic movements. This specific reference is highly sought after by collectors for its iconic "Dolphin" caseback emblem, which signifies its original "Water 30 Proof" status. The 6206 caliber is renowned for its reliability and serves as a mechanical bridge to Seiko’s most legendary chronometers. As a well-preserved survivor of the 1960s, this Weekdater captures the spirit of Japan's rapid horological advancement. Specifications ◇Brand: Seiko ◇Model: Seikomatic Weekdater ◇Reference: 6206-8990 ◇Case size: 37mm ◇Movement: Automatic ◇Case material: Stainless Steel ◇Dial: Silver ◇Crystal: Acrylic ◇Functions: Day, Date ◇Bracelet / Strap: Stainless Steel Bracelet ◇Clasp: Fold-over clasp ◇Country of manufacture: Japan ・Condition Clean overall condition with light signs of age and normal wear. The case and bracelet show minor surface marks consistent with a vintage timepiece. The dial retains its sharp appearance with a light, natural patina that adds to its vintage character. ・Service History The watch has been checked for basic operation and is functioning at the time of listing. As with any vintage mechanical watch, future maintenance may be required depending on usage and the buyer’s standards to ensure optimal long-term performance. ・Shipping & Customs Ships from Japan, carefully packed. International shipping available. Please note that customs duties, taxes, and import fees are the buyer’s responsibility.