Seiko 5 Sports Speed-Timer 7017-6010 (1970)

Available now on auction by Second Vintage This Seiko 5 Sports Speed-Timer Chronograph Automatic is a remarkable example of Japanese horological history, representing the golden era of 1970s sports chronographs. Known for its robust design and technological innovation, this reference 7017-6010 features the highly collectible "Water 70m Proof" dial text, indicating its production during the brief transitional period before industry standards shifted to "Resist." Powered by the impressive 7017A flyback automatic movement, this timepiece combines vintage utility with a commanding wrist presence. It stands as an honest and attractive piece for collectors who appreciate the distinct design language of the early 1970s. Brand: Seiko Model: 5 Sports Speed-Timer Chronograph Reference Number: 7017-6010 Serial Number: 041483 Movement: Automatic Caliber 7017A Dial: Black matte chronograph dial Case Size: 43 mm Case Material: Stainless Steel Production Year: April 1970 Condition: Good vintage condition with evident signs of age and wear. The timegrapher results show a deviation of -39 to -49 seconds per day, which indicates the movement is operational. Dial and Hands The matte black dial is the focal point of this vintage chronograph, displaying the desirable "Water 70m Proof" text at the six o'clock position. The dial features a day and date complication framed in white, with the day wheel displaying in English. The applied baton hour markers show significant patina and aging, with the luminous material having darkened over time, a common and honest trait of this reference. The hands exhibit oxidation consistent with the watch's age, and the striking orange chronograph sweep second hand provides a vibrant contrast against the dark background. The inner rotating bezel scale is present, adding depth to the dial layout. Case and Crystal The substantial 43mm stainless steel cushion case offers a bold profile typical of 1970s Seiko sports watches. The case preserves its original geometry but shows clear signs of use, including visible surface scratches, nicks, and dings throughout the case flanks and bezel area. The hidden lug design integrates smoothly with the bracelet. The crystal exhibits scratches and marks consistent with a life of wear, which is expected for a vintage tool watch of this vintage. Movement Inside beats the Seiko Caliber 7017A, an automatic chronograph movement renowned for its durability and technical sophistication. This movement features a flyback complication, allowing the user to reset and restart the chronograph without stopping it first, a premium feature for the era. The rotor is signed "Seiko 7017A Japan," and the movement appears clean in the photographs. Strap The watch is fitted with a vintage stainless steel Seiko bracelet featuring a multi-link "railroad" or "chiclet" style design. The bracelet complements the case perfectly and shows stretch and surface wear matching the condition of the watch head. It secures with a signed folding clasp. Condition This timepiece is in fair vintage condition, presenting as a well-loved and honest example. The external components show visible wear, scratches, and softening of edges, while the dial components display heavy patina. The movement is running, with timegrapher readings showing between -39 and -49 seconds per day. Dimensions The case measures approximately 43 mm in diameter excluding the crown, making it a substantial timepiece with significant wrist presence. The cushion shape allows it to wear comfortably despite its larger vintage dimensions. Remarks This 7017-6010 is a fantastic entry point into the world of vintage Seiko Speed-Timers. The combination of the "Proof" dial, the flyback movement, and the unpolished, honest character of the watch makes it a compelling find for enthusiasts of Japanese engineering. History Seiko revolutionized the chronograph market in 1969 with the introduction of their automatic chronograph movements. The 5 Sports Speed-Timer line became iconic for bringing high-performance timing capabilities to the general public. The 7017 caliber, released shortly after the famous 6139, was notable for its thin profile relative to its complexity. These watches were designed for active lifestyles and have since become cult classics among vintage collectors. / Second Vintage SKU: SEI-SST-0001