Watchmaker profile

Takuma Kawauchiya

Takuma Kawauchiya designed the Kodo Constant-force Tourbillon, combining constant-force and tourbillon mechanisms. 1

At a glance

Place
Japan

The watchmaking story

Useful places to start with Takuma Kawauchiya's work include Grand Seiko Kodo and T0 development.

Takuma Kawauchiya worked for or held a role at Grand Seiko. 1

Recognition: Contemporary Master Craftsman designation announced 2023

Scope: Direct watchmaking

Why this person is included

Documented original work

Background and working context

Affiliations and workshops: Grand Seiko

Geographic ties: Japan. Documented workplace / industry location

Brands, workshops, and other relationships

  1. Watch brand / watchmaking business · Inherited source-linked record; relationship classification reviewed, sources not reopened

    Grand Seiko — Worked for / held role. Watchmaker / movement designer 1

    Legacy affiliation: Grand Seiko. Person-level contribution: Designed the Kodo Constant-force Tourbillon, combining constant-force and tourbillon mechanisms.

    Original affiliation wording: Grand Seiko. No present-day employment or ownership inferred.

Evidence and limitations

This dossier connects 2 field-specific evidence records with 1 public source. Known links only; full career not established

Claim qualifications (2)
  • Noteworthy contribution: Manufacturer award announcement; explicitly acknowledges team support; no independent world-first validation. 1
  • Specific role: Manufacturer award announcement; explicitly acknowledges team support; no independent world-first validation. 1

Sources

  1. Takuma Kawauchiya is designated as a Contemporary Master Craftsman.Grand Seiko · First-party / official · 2023-11-10

    [S0142] Grand Seiko. "Takuma Kawauchiya is designated as a Contemporary Master Craftsman.." 2023-11-10. https://www.grand-seiko.com/uk-en/news/20231110 Accessed 2026-09-13.

    Source context

    Relationship to subject: Subject / successor organization

    How it was checked: Opened and read

    Limitation: Post-consolidation gap-resolution pass: Manufacturer award announcement; explicitly acknowledges team support; no independent world-first validation.

Corrections and stronger evidence

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