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The Index — Vintage watches, decoded.References, dials and variants up to 2000

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Brands
Seiko
Chronograph
6138-7000

Chronograph 6138-7000

c. 1970–c. 19761 variant

Years estimated from 8 dated marketplace listings; seller-stated, unverified.

Seiko 6138-7000. Front view. · Photo: Craft + Tailored · © Craft + Tailored, used with permission · Source: https://www.craftandtailored.com/products/1971-seiko-calculator-chronograph-ref-6138-7001

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Variants over time

Production years have not been recorded for these variants.

Variants

Black Calculator, Clear PointerUndated
Large steel case with a black dial, metallic grey registers and orange chronograph hands. Its calculation bezel retains the transparent secondary pointer described by the dealer. The photographed back, title and specifications identify 6138-7000; the URL’s 7001 is a conflicting old slug.
Day-date displaySlide-rule bezel with clear pointer

Reference specifications

Brand: Seiko
Model: Chronograph
Reference: 6138-7000
Production: c. 1970–c. 1976
Case material: Stainless steel
Case diameter: 44 mm
Movement: Automatic

Read more

Seiko 6138 Vintage Chronographs GuideRead more at Vintage Watch Inc (opens in a new tab)

Calibers

6138 family

Specs shared by all variants. Variant pages show where a variant differs.

Seiko Chronograph 6138-7000 · The Index

All Chronograph references

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