This serviced 1965 Seiko Seikomatic Weekdater Ref. 6206-8100 represents mid-1960s Japanese horology, embodying the executive elegance and mechanical ingenuity of Seiko's pioneering automatic calendar lineup. It is powered by the celebrated 26-jewel Caliber 6206 automatic movement from Suwa Seikosha, featuring Diashock shock protection, automatic winding efficiency, and a dual-calendar complication with an intuitive quickset date mechanism. Following a full mechanical service, it operates with supreme precision, optimal efficiency, and crisp, dependable performance.
The hallmark of this timepiece is its professionally restored ruby red sunburst dial, featuring an alluring gradient vignette finish that captures light with sharp precision across its radiant surface. The iconic executive layout is appointed with an applied silver SEIKO logo, crisp printed "Seikomatic" and "Diashock 26 Jewels" typography, faceted baton hour markers with prominent double indices at cardinal positions, razor-sharp dauphine hands, a framed date window at 3 o'clock, and a distinguished framed full-spelled day aperture at 6 o'clock.
The 37mm stainless steel case preserves its sharp factory geometry, slim polished bezel, and gracefully contoured lugs that sit comfortably and commandingly on the wrist. True to signature Weekdater architecture, it features a flush-recessed crown at 4 o'clock to maintain a completely streamlined case profile. While the dial has been expertly refinished in a rich crimson gradient palette, the watch head retains its original factory hands, crystal, case, and recessed crown. It comes paired with a premium brown textured leather strap with contrast stitching.
An exceptionally distinctive 1965 Seikomatic Weekdater reference combining robust 26-jewel automatic engineering, the historic full-spelled day window at 6 o'clock, signature recessed-crown ergonomics, and a bold, striking ruby red visual presentation.
