Seiko 6139 „Helmet" Automatik-Chronograph – sehr seltene weiße Variante mit gelben Indizes – vollständig revidiert (2026) – originales Seiko-Stahlband – Gehäuseboden nicht modellrein Kompessoruhr Background: Citizen – Seiko's Great

Background: Citizen – Seiko's Great Rival in the Quartz Era

harmonious aftermarket bracelet from Maruman (Japan)

The silver sunburst dial has developed a beautiful

well-maintained original condition with only minimal signs of wear

The "CQ" emblem stands for Citizen Quartz – Citizen's counterpart to Seiko's "SQ" signature and a hallmark of higher-end Citizen quartz watches of the late 1970s/1980s

Seiko 6139 „Helmet" Automatik-Chronograph – sehr seltene weiße Variante mit gelben Indizes – vollständig revidiert (2026) – originales Seiko-Stahlband – Gehäuseboden nicht modellrein Kompessoruhr Background: Citizen – Seiko's GreatThis is no ordinary vintage Seiko, but a piece of genuine watchmaking history with cult status: the Seiko 6139 was the world's first automatic chronograph in 1969 and the first automatic chronograph to fly into space. This very beautiful, fully serviced example from the early 1970s is the very rare white dial variant of the legendary "Helmet" with yellow indices as a Japanese Domestic Market (JDM) version with a bilingual Kanji English day display and