Now available at auction from Second Vintage A masterclass in mid-century ultra-thin watchmaking, this beautifully preserved Seiko Goldfeather represents a significant milestone in Japanese horological history. Introduced as the thinnest center-second watch in the world upon its debut, this piece offers collectors a rare opportunity to acquire a legendary dress watch with an exceptionally clean sunburst dial and a finely finished manual wind movement. Brand: Seiko Model: Goldfeather Reference Number: 15005E Serial Number: 3112189 Movement: Manual wind, 25 jewels Dial: Silver sunburst Case Size: 35 mm (excluding the crown) Case Material: Stainless steel Production Year: 1963 Condition: Excellent vintage condition. The watch exhibits a very fresh appearance with a beautifully preserved dial and normal handling wear to the case back. Evaluated on a timegrapher with a result of +60 to +67 seconds per day, which indicates a healthy movement offering reliable vintage performance. Dial and Hands The original silver sunburst dial is exceptionally well preserved, radiating a stunning brilliance under the light. It features elegant applied baton hour markers and crisp black script reading Seiko Goldfeather and Diashock 25 jewels. The slender dauphine hands are polished to a high finish, perfectly complementing the minimalist and sophisticated aesthetic of this ultra-thin dress piece. There is minimal to no visible aging, making this a highly attractive face that immediately draws the eye. Case and Crystal The 35 mm stainless steel case is distinguished by its remarkably slender profile, staying true to the historic Goldfeather legacy. The case retains sharp, well-defined lines with only light, acceptable vintage wear. The snap-on case back displays clear, legible engravings including the serial number, reference 15005E, and the GF hallmark, alongside some expected surface scratches from historical wear. The domed acrylic crystal remains clear and free of significant marks, offering a perfect, unobstructed view of the dial. Movement Inside this elegant timepiece beats the Seikosha signed manual wind caliber, featuring 25 jewels and Diashock anti-shock protection. The movement is visually stunning, showcasing bright plates, beautifully finished components, and gold-filled text indicating its high jewel count and Seikosha heritage. It represents a pinnacle of Seiko engineering from the early 1960s, specifically designed to achieve its record-breaking thinness without sacrificing reliability. Strap The watch is fitted with an elegant black leather strap featuring a subtle crocodile grain texture and a contrasting red inner lining. The strap perfectly matches the classic and refined nature of the timepiece, securing comfortably to the wrist with a standard steel pin buckle. Condition Graded as in excellent vintage condition, this Goldfeather has been wonderfully preserved over the decades. The dial and hands are crisp and highly attractive, standing out well above average for a watch of this era. The stainless steel case displays honest, light wear and handling marks, primarily visible as scratches on the case back. The movement has been measured on a timegrapher at +60 to +67 seconds per day, which indicates a healthy movement offering reliable vintage performance. Dimensions The case measures an elegant 35 mm in diameter, excluding the crown, offering a classic and highly wearable vintage presence. Its notoriously ultra-thin profile allows it to slide effortlessly under any tailored shirt cuff, making it an ideal companion for formal attire. Remarks The Seiko Goldfeather remains one of the most culturally and historically significant dress watches produced by the Japanese brand. Finding one with such an immaculate dial and sharply defined case makes this an exceptional addition to any serious vintage watch collection. Its timeless design ensures it remains as stylish and relevant today as it was in the early 1960s. History Launched in 1960, the Seiko Goldfeather was created to break the record for the thinnest center-seconds watch in the world, directly competing with the prestigious ultra-thin models coming out of Switzerland at the time. To achieve this, Seiko engineered a completely new, wide, and remarkably flat movement. The Goldfeather stands as a testament to the fierce innovation and technical prowess of Seikosha during a golden era of Japanese watchmaking, paving the way for the high-end dress watches that would define the brand for decades to come. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and very securely packaged, and shipped with tracking and insurance for your peace of mind. We ship via fast express service, with typical delivery in 1–4 business days (destination dependent). Note that with vintage watches, minor signs of wear, aging, or imperfections may be present and are considered normal for watches of this age. Please review all photos carefully before bidding. We strive to photograph each watch from multiple angles for the most accurate representation. The photos form an important part of the description. If there are any concerns of functionality or defects after delivery, make sure to contact us within 3 days of receiving the watch so we can assist you. As with all vintage watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: SEI-SGJ-0010