Seiko DX Automatic Watch (1970s)

 

Seiko DX Automatic

Reference: 6106-8579
Production: ~1970–1971
Case size: ~38 mm (large for the era)
Movement: Seiko Cal. 6106A / 6106B
Jewels: 25
Beat rate: 21,600 bph
Functions: Day / Date (quickset)
Origin: Japan