• Reference / case code: Seiko Navigator Timer 6117-8000
• Serial: 985118 = August 1969
• Movement: Seiko automatic cal. 6117 (17-jewel)
• Functions: GMT / 24-hour hand + external rotating 24-hour bezel, date
• Dial: charcoal/anthracite sunburst with lacquer-like sheen
• Bracelet: Stainless signed bracelet
• Included: watch and OG bracelet and box
• Serviced: December 2025, seals checked and running well 

• Case: sharp case lines with correct brushed top surfaces and polished sides; minor desk diving marks
• Crystal: mineral crystal in great condition
• Dial/hands: original dial and aged lume on hands and batons
• Bezel: external coin-edge bidirectional 24-hour bezel rotates correctly
• Crown: [bezel turns smoothly, date change good]

Measurements

• Case diameter (ex crown): 38.5 mm
• Lug-to-lug: 45 mm  
• Thickness: 11.8 mm
• Lug width: 19 mm

• Timekeeping: OK
• Date change: OK
• GMT / 24-hour hand: [OK]
• External 24-hour bezel rotation: [OK]

The 6117-8000 Navigator Timer sits in Seiko’s early travel-watch lineage, following the 1964 World Time era but stripping things back into a cleaner, more wearable GMT format: charcoal sunburst dial, red 24-hour hand, and a practical 24-hour bezel for a second time zone.

This reference is loved because it wears like a true tool watch: compact size, distinctive Seiko cushion/barrel case feel, and that perfectly judged red GMT hand that makes the dial pop without becoming loud. It’s one of those vintage Seikos that feels “right” the moment it’s on the wrist.

Modern context

Seiko revisited this design in 2023 with the Prospex Land Mechanical GMT Limited Edition SPB411 (limited to 4,000 pieces), which is a nice nod to how enduring the Navigator Timer design is — but this listing is for the original vintage watch

Important notes

Water resistance: seals checked, but treat as vintage WR as not guaranteed. Vintage watch: photos form part of the description.