Seiko 6139‑8020 Chronograph – Grey Dial – Blue Subdial – Day/Date – 40mm A classic and collectible automatic chronograph from Seiko’s iconic 6139 series, dating from the early 1970s. Known as one of the world’s first automatic chronographs, this model combines vintage style with practical functionality. Specifications Brand – Seiko Model – 6139‑8020 Chronograph Case width – 40 mm Case material – Stainless steel Bracelet – Original Seiko stainless steel bracelet Movement – Automatic chronograph Dial – Grey with dark blue subdial and orange hand Functions – Hours, minutes, central seconds, chronograph, day/date display Box/Papers – Not included Condition – Checked by our watchmaker – 100% authentic and in good working order Description This Seiko 6139‑8020 features a striking grey dial with a contrasting dark blue subdial and vivid orange chronograph hand, giving it a sporty yet vintage look. The 40mm stainless steel case and matching Seiko bracelet provide durability and comfort on the wrist. Equipped with a reliable automatic chronograph movement and practical day/date display, this watch is a must-have for collectors of early 1970s Seiko chronographs. A true classic, blending historical significance with timeless design.