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Seiko

Seiko 5 Sports Speed-timer 6138-0020 "Tokei Zara"

Seiko 5 Sports Speed-timer 6138-0020 "Tokei Zara"

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Brand

seiko

Diameter

42mm

Model

Chronograph

Year

1970 - 1979

Reference

6138-0020

Water resistant?

No

Movimento

Automatic

Case material

Steel

Specifications

Caliber 6138

Made in 1974

Approximate dimensions:

- 44mm (case without crown)

- 47mm (between claws)

- 19mm (bracelet fitting)

- 15mm (thickness)

Description

Vintage piece in excellent condition, showing small signs of use and time

Watch only, no original box or documentation

The wrist in the photo is approximately 17cm for reference

Learn more

The Seiko 6138-0020, also known as the “Tokei Zara,” is a Japanese automatic chronograph from the 1970s that has become a benchmark for vintage watch collectors.

The 6138-0020’s design is striking: it features a helmet-shaped steel case with a 42mm diameter, which is generous by today’s standards but typical of the 1970s, with a significant presence on the wrist.

Its mechanics and functionality reinforce the appeal of this watch: the 6138 caliber provides reliable operation, a stop/start chronograph with quick return, and a day-date mechanism with quickset adjustment.

What makes the Tokei Zara especially desirable among collectors is precisely this combination of rarity, striking aesthetics, and historical value. Since it was created for the Japanese domestic market, it was not always exported, which means that good, original examples are less available outside Japan. This, combined with the bold look of the 1970s and the culture of mechanical chronographs, makes this model a highly sought-after object—both for those who appreciate vintage design and those who value Seiko’s classic engineering.

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