Seiko 6138-0040 Bullhead -0060T Chronograph Automatic c. 1977 Fishbone Steel 44 mm
Model: Seiko Bullhead Chronograph Automatic Conditions: Very Good (please see pictures for details) Functions: ALL running well. Recently cleaned and oiled. Movement: Mechanical (Automatic) Japan-Made Caliber: 6138B Jewels: 21 Power Reserve: 45 hours Frequency: 21,600 A/h Signed Seiko: Dial, Case, Crown, Bracelet and Movement Material: Stainless Steel Case, Crown, Clasp and Bracelet Reference #: 6138-0040 Model #: AV027 Model Variation: 6138-0060T Variation Name: Chronograph Automatic \ International Version Release Year: 1973 Serial #: 702378 Year: 1977 Dial: Tropical Brown Hour Markers: White Hands: White / Yellow Bezel: Tachymeter Crystal: Glass Caseback: Suwa logo Diameter: 44.0 mm without crown Case Thickness: 15 mm Lug Width: 20 mm Bracelet: Original Seiko Fishbone Steel Bracelet Ref. #: Z040S / Z050S Clasp: Folding Flip Clasp Code: Japan Z # of Links: 16 Length: 8.0 inches long (end to en