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Seiko 6139

Probable

One of the automatic chronographs that appeared in 1969, alongside the Zenith El Primero and the Chronomatic Caliber 11. Which came first is a long-running and unsettled question that this catalog does not adjudicate.

Specifications

Movement manufacturer
Seiko
Production
1969–?
Frequency
21,600 vph (3 Hz)
Winding
automatic
Complications
Chronograph · Day-date (execution dependent)

Architecture

Automatic chronograph with a column wheel and a vertical clutch, with the chronograph work integrated rather than modular.

Related calibers

  • Related caliber

    Seiko 6138B

    Shares the architecture; the 6139 has no hour totaliser.

References using this caliber

Provenance of this record

Sources & Evidence

Secondary sourceCollector research

Ranfft Watch Movement Archive

Dr. Roland Ranfft (archived and maintained by volunteers)

Accessed
2026-08-18

Cited for

This referenceProbable
View source ↗

Last verified: Not yet reviewed