• Model: Seiko Bullhead Chronograph Automatic 
  
• Conditions: Good (please see pictures for details)
• Functions: ALL running well. Recently cleaned and oiled.
  
• Movement: Mechanical (Automatic) Japan-Made
  
• Caliber: 6138
  
• 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 Variation: 6138-0060T
• Variation Name: Chronograph Automatic \ International Version
  
• Release Year: 1973
  
• Serial #: 603163
  
• Year: 1976
  
• Dial: Blue - Original never refinished
  
• Hour Markers: Stick - Never relumed
  
• 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
  
• # of Links: 14
  
• Length: 7.5 inches long (end to end)
  
• Other: Quickset Day (English, Spanish), Quickset Date, Small seconds, Screw-on caseback

• No Box
  
• No Papers
  

Note: All original Export version of the famous Seiko Bullhead. All the parts are 100% Seiko.