Blue Chronograph Automatic Dial
Blue sunburst dial with Chronograph printing, white square registers, luminous arrow hands and a blue . The detailed dealer description and photographs establish blue despite Black in its short specification table. The supplied Seiko fishbone bracelet is described with Z039 end pieces.
Dealer specimen attribution: 1974, partly masked serial 49XXXX; the photographed back reads 6138-0030 and begins 49. The dealer records light past polishing, some degradation of the marker lume, minimal bracelet stretch and unknown service history. Originality, historical running condition and UV observations remain attributed rather than current guarantees.
Square elapsed-time registers sit at twelve and six on the photographed Kakume dials.
Chronograph appears below Seiko on the blue photographed dial.
| Variant | Production |
|---|---|
| 5 Sports Speed-Timer, Taupe Dial | Undated |
| Speed-Timer, Taupe Dial and Baton Hands | Undated |
| Blue Chronograph Automatic DialCurrent | Undated |
Unknown attributes are left out rather than guessed.
Seiko 6138 family
Automatic day-date chronograph family with elapsed-hour and 30-minute counters. The exact A/B movement suffix, jewel count and originality of fitted components require specimen-specific evidence; none is inferred from a case reference alone.
Automatic
Arrow-shaped hour and minute hands have luminous filling. Shape and visible filling alone do not identify the compound or establish originality.
The dealer describes the supplied Seiko fishbone bracelet with Z039 end pieces; this is specimen-specific equipment, not authentication of every bracelet carrying that code.