Seiko 5 Sports Speed Timer Ref. 6139-7050
 
Dial: Seiko original green dial with chronograph subdials at 6. bar index with inner bezel
Movement: Automatic mechanical chronograph (cal.seiko 6139) 21 jewels
Manufacture area: 1973
Crystal: mineral
Case metarial: Stainless Steel 
Case Diameter: 38mm (excludes crown)
Crown: Push-down and One Chronograph pushers at 4 and 2 is for rotating inner bezel
Strap: Original Seiko bracelet that fits on 19.5cm wrist
Characteristics: The Seiko Speedtimer 6139 is one of the first automatic chronograph watches ever manufactured in the world
FULL FACTORY-CONDITION RESTORATION – $1,500 invested
• Complete disassembly & factory-spec restoration (inside and out)
• 100 % genuine factory parts only – zero aftermarket
• New genuine seals installed and pressure-tested to original factory specification
• Newly restored and regulated to original chronometer-grade precision
• 1-year comprehensive warranty (most sellers offer none)
• 14-day 100 % money-back guarantee — no questions, no restocking fee
This watch is not merely “serviced.”
It is indistinguishable from one that left the factory the day it was born.
Look at eBay. Look across Chrono24.
If you find another example restored to this standard… buy it.
You won’t.