This serviced 1970 Seiko 5 Actus SS Ref. 6106-8570 represents early-1970s Japanese horology, embodying the dynamic design language and mechanical innovation of Seiko's iconic JDM Actus lineup. It is powered by the upgraded 25-jewel Caliber 6106 automatic movement from Suwa Seikosha, featuring Diashock shock protection, a hacking "Second Setting" mechanism, and an intuitive push-crown quickset day/date system. Following a full mechanical service, it operates with supreme precision, optimal efficiency, and dependable performance.
The hallmark of this timepiece is its factory-original silver sunburst dial, accented by a distinctive concentric circular track that captures light with sharp precision across its radiant surface. The layout is appointed with an applied silver SEIKO logo, the applied "5 Actus" shield emblem, crisp "SS 25 JEWELS" typography with the Suwa factory insignia, faceted block indices with sleek contrast accents and a prominent double index at 12 o'clock, razor-sharp hands, and a framed domestic Kanji day-date window at 3 o'clock.
The 39mm stainless steel cushion case preserves its sharp factory geometry, brushed upper surfaces, and polished flanks that sit comfortably and commandingly on the wrist. True to signature Actus architecture, it features a flush-recessed crown at 4 o'clock. The timepiece remains 100% factory-correct and complete, retaining its original dial, hands, crystal, case, crown, and rare factory-original stainless steel multi-link bracelet.
An exceptionally desirable 1970 Seiko 5 Actus SS reference combining the upgraded 25-jewel hacking 6106 caliber, a distinctive concentric-track silver sunburst dial, bold 39mm cushion case architecture, and full original bracelet integrity.
