Rare Vintage Seiko 5 Sports Speedtimer UFO 6138-0011 Men’s Chronograph Watch JDM

Up for sale is a rare vintage Seiko 5 Sports Speedtimer UFO 6138-0011 men’s automatic chronograph watch, produced for the Japan Domestic Market (JDM) during the 1970s. The 6138-0011, commonly known among collectors as the “UFO,” is one of Seiko’s most iconic automatic chronographs, prized for its distinctive cushion-shaped case, robust 6138 movement, and historical significance as one of Seiko’s legendary automatic chronographs. This example is the highly desirable Japanese domestic version, featuring the original Japanese day wheel along with the correct Seiko 5 Sports and Speedtimer dial insignia that collectors look for. The watch is running and holding accurate time over a 24 hour period. However, the chronograph currently has an issue where it runs continuously and cannot be stopped because the side pushers are not properly engaging the chronograph mechanism. As a result, the chronograph cannot be started, stopped, or operated correctly. The watch will require a service to correct this issue, and given its age, a full service would likely be beneficial as I am unsure when the watch was last serviced, if ever. The watch is fitted with an aftermarket stainless steel bracelet. The watch is in good vintage physical condition with signs of use and age. The photos best describe its overall appearance and physical condition. Key Details * Brand: Seiko * Model: 5 Sports Speedtimer UFO 6138-0011 * Movement: Automatic Chronograph * Era: 1970s * Origin: Japan Domestic Market (JDM) * Day Wheel: Japanese * Dial: Correct Seiko 5 Sports and Speedtimer dial insignia * Bracelet: Aftermarket stainless steel bracelet * Condition: Running and holding accurate time over a 24 hour period * Chronograph: Runs continuously and cannot be stopped because the side pushers do not properly engage the chronograph mechanism. The watch will require a service to correct this issue. The Seiko 6138-0011 UFO is one of the most recognizable and desirable vintage Seiko chronographs ever produced. As the sought-after Japanese domestic version with the correct Japanese day wheel and dial markings, it represents an excellent candidate for servicing and a fantastic addition to any serious vintage Seiko collection. Ships carefully. Feel free to message me with any questions.