Chronograph 6139-8020
c. 1970–c. 1976
Years estimated from 9 dated marketplace listings; seller-stated, unverified.
Variants
No variants documented yet.
Reference specifications
- Brand
- Seiko
- Model
- Chronograph
- Reference
- 6139-8020
- Production
- c. 1970–c. 1976
- Case material
- Stainless steel
- Case diameter
- 40 mm
Specs shared by all variants. Variant pages show where a variant differs.