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Model: "Kakume" Speed-Timer Automatic Chronograph ref. 6138-0030 (JDM Model) circa November of 1976; Made in Japan
Case: Solid stainless steel case with screw-down back is approximately 43mm excluding the original unsigned winding crown and pushers
Strap: 18mm Molequin orange calfskin strap with matching stitching and 16mm polished stainless steel tang buckle
Movement: Seiko cal. 6138B self-winding automatic chronograph (21 jewels) with quick-set day (two languages - English/Japanese Kanji) and quick-set date; 21,600 BPH; Japan
Features: Stunning original silver sunburst dial (non-luminous) with orange minute track and contrasting black "SEIKO" logo; matching black sub-registers and day-date display at 3 o'clock with red "Sunday" text (can choose between English or Japanese Kanji days of the week); chronograph minute totalizer at 6 o'clock; 12-hour totalizer at 12 o'clock; original non-luminous hands; original orange chronograph register hands; sharp oversized stainless steel case with beautiful black tachymeter bezel and clean tempered mineral glass crystal; in-house Seiko 6138 column-wheel chronograph movement; cool matching orange calfskin strap
Condition: Fantastic original condition overall with minor honest wear consistent with age and use; sharp solid stainless steel case appears to be unpolished (or very close to it) with the original finishes throughout; crisp screw-down caseback remains clearly legible; excellent original silver sunburst dial with vibrant orange minute track and clean contrasting black sub-registers; matching original non-luminous hands; very nice original black tachymeter bezel; clean tempered mineral glass crystal
Other: This vintage JDM 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 the silver sunburst dial with orange minute track and contrasting black sub-registers and tachymeter bezel! The colors really explode when the sun hits and the silver sunburst dial almost has a golden hue to it. The quick-set day of the week can be displayed in English or Japanese Kanji with Sunday shown in red as usual. Seiko opted for matching bright orange chronograph hands on this model for increased legibility and it all just works so well. You can read more about the Seiko "Kakume" from our friends at Worn & Wound. This particular example is offered for sale in superb original condition and comes on a playful orange Molequin strap. The in-house 6138 movement has manual-winding capability (unlike the 6139), but also features a smooth column-wheel and vertical-clutch engagement system. It is ready to wear trackside or pair with your vintage Japanese sports car.