SOLD — Seiko 6139-6032 JDM SpeedTimer “Coke”



For your consideration is a July 1972 6139-6032 JDM SpeedTimer “Coke” Automatic Chronograph. All components are original to the watch (dial, hands, case, crown, pushers, bracelet and all mechanical components). It has an aftermarket tachymeter bezel and insert, but I am including the  patina’d original with the sale.


I would rate the cosmetic condition very good. The case has not been polished and shows all of the original surface brushing and high polish edges — it is in amazing condition for the age. The hands reset exactly to their vertical positions and have well preserved lume with slight darkening. Bracelet is a brand new and unworn Uncle Seiko 5-Sports that mimics the originals from Seiko. The crystal is a new Klein Hardlex glass replacement.

Dimensions and details

Diameter: 41mm
Width (L-to-L): 47mm
Height: 15mm
Lug width: 19mm
Movement: 6139b, 21 factory jewels + 2 additional


I serviced this watch on 06/30/2022. That process includes a full cleaning and evaluation of all movement components and proper lubrication. Lubricants used were Moebius synthetic varieties appropriate for this watch movement type. The amplitude numbers are 240-250 range and the rate is +/- 2 sec/day. The case back, pushers and crown all have new, and factory correct seals.

This watch comes with a 100% money back promise of originality and a 1-year limited warranty on the movement from the time of sale. Shipping is to CONUS through USPS 2-day. International is a flat fee using USPS international priority.