Seiko 5 Actus SS 6106-8660 – September 1974 – Green Sunburst – 25 Jewels – JDM Vintage – revidiert Quarz The screwed steel case back

The screwed steel case back features an embossed image of a manta ray – a tribute to the underwater world

introduced as early as 1959 – the first Japanese waterproof watch ever

technisch anspruchsvolle Funktionen zu moderaten Preisen

ultimately paving the way for Grand Seiko

Seiko 5 Actus SS 6106-8660 – September 1974 – Green Sunburst – 25 Jewels – JDM Vintage – revidiert Quarz The screwed steel case backThe Seiko 5 Actus represents the sportier, more modern iteration of Seiko's mechanical line from the 1970s. This particular example, reference 6106 8660, dates from September 1974 (serial number 49xxxx) and embodies the transition from classic dress aesthetics to the bolder designs of the mid 70s. Historical Context Within Seiko's product architecture, the Seiko 5 Actus was positioned as follows: technically above the classic Seiko 5 models below Lord