Brand: Seiko

Model: Speed-Timer Automatic Chronograph ref. 6139-7069 (Black Dial) circa April of 1976

Case: Solid stainless steel case with screw-down back is approximately 40mm excluding the original unsigned crown and pushers

Bracelet: Rare original 18mm Seiko stainless steel bracelet with signed fold-over clasp and removable links; will fit wrist sizes up to slightly larger than 7.25" (optional clasp extension can be installed to accommodate larger wrist sizes)

Movement: Seiko cal. 6139B self-winding automatic chronograph with quick-set day (two languages) and quick-set date; 21,600 BPH; Japan

Features: Stunning original matte black dial with applied "SEIKO" logo and blue chronograph minute totalizer at 6 o'clock; original luminous hands; original matching chronograph register hands; blacked out day-date display at 3 o'clock with red Sunday text (can choose between English or Spanish days of the week); unpolished 40mm stainless steel case with tempered mineral glass crystal; rare original Seiko bracelet; in-house Seiko 6139 column-wheel chronograph movement (serviced)

Condition: Fantastic original condition overall with honest wear consistent with age and use; 40mm solid stainless steel case appears to be unpolished with apparent "sleeve" wear; crisp screw-down caseback remains clearly legible with a few light tool marks; gorgeous original matte black dial with crisp printing, vibrant colors, and all luminous material in tact; excellent original hands with all luminous material in tact and matching; original chronograph register hands are bright and vibrant; new tempered mineral glass crystal; nice original Seiko bracelet matches the overall condition of the watch

Other: This vintage Seiko Speed-Timer is the definition of cool - How did Seiko pack so many features into one watch while retaining such a balanced and appealing design aesthetic? We love how the blacked out day-date display blends into the matte black dial, and the vibrant colors really pop! The day of the week can be displayed in English or Spanish and Sunday is shown in red. Seiko opted for bright orangish-red chronograph hands on this model for increased legibility and it all just works so well. This particular Speed-Timer comes in superb original condition on its rare original Seiko bracelet and is ready to pair with your Japanese sports car (i.e. a Honda S2000 in Berlina Black).

For peace of mind, the Seiko 6139 movement has just been completely overhauled by our watchmaker with a new tempered mineral glass crystal and fresh gaskets installed at the time of service (the original parts will also be included with the watch). Speaking of the 6139 movement, it was quite possibly the very first automatic chronograph movement to come to market commercially (May of 1969). The Zenith El Primero and Heuer cal. 11 movements also debuted that year. You can read more about this controversial topic from our friends at HODINKEE and OnTheDash. Regardless of which movement actually came first, the Seiko 6139 is a steal in the marketplace today compared to comparable watches from Heuer and Zenith.