This serviced 1960s Seiko Seikomatic Weekdater Ref. 6218-8970 represents mid-1960s Japanese horology, embodying the executive prestige and mechanical pinnacle of Seiko's flagship automatic calendar lineup. It is powered by the celebrated 35-jewel Caliber 6218 automatic movement from Suwa Seikosha, the historic direct precursor to the legendary Grand Seiko 62GS, featuring Diashock shock protection, hacking seconds, a fine micro-regulator, and an integrated quickset date complication. Following a full mechanical service, it operates with supreme precision, optimal amplitude, and crisp, dependable performance.
The hallmark of this timepiece is its factory-original silvery-white sunburst dial, capturing light with sharp precision across its radiant radial surface. The layout is appointed with an applied silver SEIKO logo, cursive Seikomatic script, crisp "Diashock 35 Jewels" typography, the prestigious eight-pointed Applique Dial (AD) star emblem above 6 o'clock, faceted baton hour markers with prominent double indices at the cardinal positions, razor-sharp dauphine hands, a framed date window at 3 o'clock, and an iconic curved day aperture at 6 o'clock displaying the full day in English.
The 36mm stainless steel case preserves its sharp factory geometry, slender polished bezel, and gracefully contoured faceted lugs that sit comfortably and commandingly on the wrist. True to signature Weekdater architecture, it features a flush-recessed crown neatly tucked at 4 o'clock to maintain a completely streamlined case silhouette. The watch head remains 100% authentic and unaltered, retaining its original factory dial, hands, crystal, case, and recessed crown. It comes paired with a premium textured brown leather strap.
An exceptionally desirable 1960s Seikomatic Weekdater reference combining top-tier 35-jewel engineering, direct mechanical lineage to the first automatic Grand Seiko (62GS), the rare AD star dial designation, iconic full-day window at 6 o'clock, and pristine factory-original preservation.
