Vintage Seiko "Bullhead" Automatic Chronograph – Ref. 6138-0040 – May 1977 (Fully Serviced)

Up for sale is a highly collectible and legendary vintage Seiko "Bullhead" automatic chronograph, reference 6138-0040. Produced in May 1977, this iconic "bullhead" configuration (crown and pushers at 12 o'clock) is one of the most coveted retro sports chronographs from Japan, boasting incredible wrist presence and timeless design.

Item Specifics & Condition Report:

• Brand: Seiko

• Model: Chronograph Automatic "Bullhead"

• Reference Number: 6138-0040

• Serial Number: 753982 (Dating the watch precisely to May 1977).

• Movement: Seiko Caliber 6138 automatic columnar-wheel chronograph movement, 21 Jewels, Swiss/Japan heritage. Fully signed on the rotor.

• Case Diameter: 44 mm (excluding crown) – A bold, oversized vintage stance.

• Case Material: Solid Stainless Steel case with a screw-down stainless steel caseback stamped with the classic Seiko markings, "Water Resistant", "Stainless Steel 6138-0040", and Japan origin.

• Bezel: Original black tachymeter external bezel in good vintage condition.

• Dial: Stunning original matte black dial featuring dual sub-dials (chronograph registers) in a beautiful deep blue/teal tone, an eye-catching yellow central chronograph sweep hand, and applied luminous hour markers.

• Calendar: English/Spanish bilingual day-date window located at the 6 o'clock position.

• Band: Fitted with a high-quality thick brown leather strap with contrast stitching that perfectly complements the vintage racing aesthetic.

Condition & Functionality Report:

The watch is in gorgeous vintage condition and has been recently fully serviced by a professional watchmaker.

• Chronograph Functions: The chronograph operates perfectly—starts, stops, and snaps back precisely to zero.

• Timekeeping & Calendar: The automatic movement winds efficiently, sets correctly, and the day-date quickset functions exactly as it should.

• Cosmetics: The massive stainless steel case retains its distinct sharp geometry, original brushed/polished finishes, and displays only minor, honest hairline scratches consistent with its age. The dial and hands are remarkably sharp and crisp. A stunning, turn-key piece ready for any high-end collection.