Introduction This vintage Seiko chronograph features the iconic automatic chronograph movement and a classic black dial with contrasting sub-dials. Known among collectors as one of Seiko’s most important chronographs, this model combines strong historical value with unmistakable 1970s design. Historical & Collector Value The Seiko 6138 series represents a key chapter in chronograph history, following Seiko’s pioneering work in automatic chronographs. Models such as the Ref. 6138-0020 are highly regarded for their in-house movement, robust construction, and distinctive aesthetics. Today, they are sought after by collectors worldwide. Specifications • Brand: Seiko • Model: Chronograph Automatic • Reference: 6138-0020 • Movement: Automatic chronograph • Case material: Stainless steel • Dial: Black dial with dual sub-dials • Functions: Time, chronograph, day & date • Case size: approx. 38.5 mm (excluding crown) • Bracelet: Stainless steel bracelet • Made in Japan Condition The case shows visible scratches and signs of wear consistent with age and regular use. The dial shows noticeable aging, patina, and wear on the sub-dials and markers. The crystal shows scratches and surface wear. The bracelet shows stretch and signs of use. The watch is running, however accuracy and chronograph performance have not been fully tested. Overall condition is rated Good (G) for a vintage Seiko chronograph. Service History Service history is unknown. The watch has not been serviced by us. Box & Papers No original box or papers are included. Shipping & Customs The watch will be carefully packed and shipped with tracking. International shipping is available. All customs duties, VAT, and import taxes are the responsibility of the buyer.