Vintage 1970 Seiko 6139-7010 SpeedTimer "Military" JDM Serviced Original

Up for sale is an exceptional example of the 1970 Seiko 6139-7010 “Military” Speed-Timer, a highly collectible model powered by Seiko’s original automatic chronograph movement. These watches were issued to the Japanese Defence Forces, including both the JMSDF (navy) and JASDF (air force).
This particular piece is fully original, featuring an outstanding original dial along with beautifully preserved lume on both the hands and markers. It has been fully serviced by us and is running as it should.
Key Features:
• Model: Seiko 6139-7010 “Military” Speed-Timer
• Year of Manufacture: February 1970
• Movement: Seiko cal. 6139 automatic chronograph, fully serviced and running accurately (see photos)
• Case: Original finish, showing only light wear consistent with its vintage character
• Bracelet: Original, approximately 19.5cm in length, see 4th photo.
• Service: Recently serviced with new seals; all functions operating correctly
• Condition: Very good vintage condition, with an attractive, honest patina
 
Additional Information:
The Seiko 6139-7010 “Military” Speed-Timer is a rare and highly sought-after model, particularly in such original condition. This example retains its authenticity while benefiting from a recent service, making it both collectible and ready to wear.
Please review the photos carefully, as they form part of the description and best represent the watch’s condition and originality.
A Note on Vintage Watch Ownership
 
Vintage mechanical watches, while robust and reliable, are not as precise as modern quartz timepieces and require periodic servicing. Some gentle wear and natural patina should be expected with an original watch of this age.
 
Treated with care, a vintage watch will continue to provide enjoyment for many years to come. At TEMPO PRIMA, we believe vintage watches should not be worn in water, regardless of their original specifications. We do not pressure-test vintage watches and therefore cannot guarantee water resistance. To preserve the longevity and integrity of these timepieces, we strongly recommend keeping them dry and avoiding exposure to moisture.