Seiko

Seiko’s history began in Tokyo in 1881 with Kintaro Hattori’s business. The Seiko name appeared on a wristwatch in 1924. The company developed mechanical, automatic, quartz and solar watches. In 1969 it introduced the Quartz Astron, described by Seiko as the world’s first quartz wristwatch offered for sale.

Identification

The case back is essential. Seiko states that the calibre and case number identify the watch type; the calibre is normally the four characters left of the hyphen. Compare it with dial, hands, case, crown, bracelet and movement. One code alone does not prove date or originality.

Originality and condition

Look for inconsistent components, refinished dials, replacement hands, heavy polishing and non-original crowns or bracelets. Check timekeeping, date, chronograph functions and moisture. Historic water-resistance markings are unreliable without a recent pressure test.

Collector interest

Reference, calibre, period, originality, condition and documentation influence demand.