5 Sports 6139-8050
c. 1975–c. 1976
Years estimated from 3 dated marketplace listings; seller-stated, unverified.
Variants
No variants documented yet.
Reference specifications
- Brand
- Seiko
- Model
- 5 Sports
- Reference
- 6139-8050
- Production
- c. 1975–c. 1976
Specs shared by all variants. Variant pages show where a variant differs.