Seiko 5 Actus SS Fumé Dial 25 Jewels – September 1975
Coupled with its angular case architecture, original signed bracelet with a comfortable spring-loaded clasp extender, and signature 4 o'clock recessed crown with quickset push function, it remains an iconic representation of mid-1970s Japanese watchmaking excellence.
Historical Background
About the Seiko 5 Actus SS (Ref. 6106-8660)
Produced exclusively for the Japanese Domestic Market (JDM) during the 1970s, the "Actus" series was Seiko’s bold response to the demand for stylish, modern timepieces tailored for a younger generation of executives and enthusiasts. The "SS" badge stands for "Second Stop," signaling the inclusion of a hacking movement—a premium feature for precise synchronization.
This specific example from September 1975 features the desirable 25-jewel iteration of the robust Caliber 6106, framed by an eye-catching sunburst fumé dial that shifts tones dynamically depending on light exposure.
Specifications
- Brand: Seiko
- Model: 5 Actus SS (Second Stop / Hacking)
- Reference: 6106-8660
- Serial Number: 595564
- Movement: Automatic Seiko Caliber 6106C (25 Jewels, 21,600 bph, Hacking movement)
- Year of Manufacture: September 1975 (JDM - Japan Domestic Market)
- Functions: Hours, Minutes, Central Seconds, Day/Date display (English/Kanji)
- Quickset: Push-system calendar adjustment via crown
- Case Material: Stainless Steel
- Case Diameter: Approx. 37.5 mm (excluding crown)
- Dial: Original Sunburst Fumé / Brown-Grey Gradient Dial
- Crystal: Hardlex / Acrylic
- Bracelet: Original Seiko 5 Actus signed stainless steel bracelet equipped with a spring-loaded stretch clasp extender for additional comfort and flexible wrist fitting
- Condition: Pre-owned vintage condition with original polishing lines, fully serviced (serviced)
- Warranty: 1-year mechanism warranty included