Seiko 6139-7002 Automatic Chronograph "Chocolate Dial" . A rare and highly sought-after vintage icon, this Seiko Ref. 6139-7002 features a stunning original chocolate brown dial that has aged with incredible character. As one of the world's first automatic chronograph movements, the 6139 calibre is a true milestone in horological history. This model is known for its rugged stainless steel case and a distinctive internal tachymeter scale. The dial is accented by a vibrant yellow chronograph hand and a sub-dial at 6 o'clock, creating a perfect balance of sporty utility and 1970s style. This is a must-have for any collector of vintage Japanese chronographs who appreciates a "tool watch" . Important Note: High-resolution images may exaggerate minor imperfections or light surface scratches on the case and crystal not visible to the naked eye. . Specifications . Brand: Seiko . Model: Automatic Chronograph . Reference: 6139-7002 . Movement: Automatic, Seiko Calibre 6139 . Case Material: Stainless Steel . Case Size: .42mm (without crown) . Dial: Original Chocolate Brown with Day-Date Window . Crystal: Hardlex Mineral . Strap: Original Seiko stainless steel bracelet Bracelet adjustable and can fit up to 19cm wrist . Functions: Hours, minutes, 30-minute chronograph, tachymeter, day and date (English/Roman) . Gender: Men / Unisex . Era: 1970s . Condition . Overall: Excellent vintage condition with a warm, authentic patina and a strong wrist presence. . Movement: The Calibre 6139 automatic movement is serviced, running smoothly, and the chronograph functions (start, stop, and reset to zero) are fully operational. . Case: The stainless steel case is well-preserved, maintaining its original brushed and polished surfaces with light signs of honest wear. . Dial: The original chocolate dial is in superb condition, with the lume markers showing a beautiful natural aging. . Tax Disclaimer . VAT, customs duties, or import taxes may apply depending on the buyer’s country. Please check local regulations before bidding. . Shipping . Worldwide insured shipping with tracking. The watch will be carefully packed for safe delivery. .