This serviced 1976 Seiko 5 Actus SS Ref. 6306-8040 represents mid-1970s Japanese horology, embodying the sporty elegance and mechanical reliability of Daini Seikosha's domestic market lineup. It is powered by the celebrated 21-jewel Caliber 6306 automatic movement, sharing its esteemed architecture with Seiko's legendary domestic divers, featuring Magic Lever winding, Diashock protection, quickset day-date operation, and the signature "SS" (Second Setting) hacking mechanism. Following a full mechanical service, it operates with optimal efficiency, seamless winding, and dependable daily precision.
The hallmark of this timepiece is its factory-original silvery-white dial, capturing light with crisp clarity across its bright surface. The layout is appointed with applied silver SEIKO and "ACTUS" branding beneath 12 o'clock, crisp "SS 21 JEWELS" lettering accompanied by the signature Daini lightning bolt insignia, faceted baton hour markers with black contrast inlays, polished baton hands, and a cleanly framed bilingual Kanji/English day-date window at 3 o'clock.
The 37mm stainless steel case preserves defined angular contours, crisp brushed top surfaces, and polished flanks that sit comfortably and commandingly on the wrist. Emphasizing its ergonomic design, it features a neat semi-recessed crown at 4 o'clock. The timepiece remains 100% authentic and complete throughout, retaining its original factory dial, hands, crystal, case, crown, and rare original multi-link bracelet.
An exceptional 1976 Seiko 5 Actus SS reference combining Daini's coveted 6306 hacking movement, an authentic domestic Kanji calendar, distinctive 1970s angular case geometry, and full factory bracelet preservation.
