Much digital ink has been spilled over which Seiko 6139 the late Bruce Lee actually wore - it would have been a 6139-6010, possibly JDM though more likely to be from Hong Kong. He may have had a black dial one, but I am certain he had a brown dial one (possibly as well as the black, or maybe the black one is actually a brown dial in certain light).
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Here's one Nov 69 non-JDM PROOF watch with Chinese day wheel, two-piece chrono hand and 6139A movement - this one is currently on an Uncle Seiko bracelet:
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The brown dial is interesting - it's not patina or a "tropical" degradation of the black, as is the case with some other vintage watches of the same period (Omega Speedmasters, Heuer Camaros and the like). It was always that colour, and I suspect was a special order from the Seiko distributor (Thong Sia) in Hong Kong & Thailand, who to this day also own the Stelux bracelet company.
It's a stunning colour in bright sunlight, and yet in subdued lighting could almost pass as black (only the contrast between the black chapter ring and the dial might give it away)
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Here's one as I received it, hiding its light under the bushel of a scratched up crystal...
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And finally, the brown 6139-6010 dial colour is not the same as other brown dials of the same period - here's a brace of them, both November 69, with a June 1970 brown Bell-matic 4006-6020 to show the difference...
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