Up for sale is a vintage JDM Seiko 6139-6002 "Speedtimer" automatic chronograph, the rare (by any definition) version with a teal dial that is sometimes called the "Sunrise" (likely because of the unusual orange gradient pattern on the subdial, though who knows). This is something of a controversial statement, but the 6139 is generally regarded as the first commercially-available automatic chronograph watch, and along with the later 6138 is one of the two classic Seiko chronograph movements from the 70s. The export (i.e. not for Japan) 6139-600X model chronographs came in gold, dark blue, and silver dials, and are often referred to as the "Pogue" chronograph because astronaut William Pogue wore one of the gold-dialed versions into space, as described in detail here. The Japanese or "Japanese Domestic Mode" (JDM) versions were all labelled "speedtimer" on the dial, and in addition to the 6139-600X also came as a 6139-601X (with a black dial and a black/red bezel). This extremely uncommon "sunrise" version only came as a -6002 model, and there are very very few examples surviving. You can find a recent thread about how rare (and expensive) they've become here. The serial number dates this example to December of 1972 - all known examples either date to November or December of that single year.
Mechanically, the watch runs but is being sold for parts or repair. The watch has the correct 6139A 21J movement unique to the speedtimers. It runs and seems to be keeping OK time, but only when the chronograph is engaged - the moment it is stopped, the watch stops ticking. Also, the chronograph buttons don't seem to work most of the time, though they do sometimes. No idea why or how easily it could be fixed. Sometimes, the chronograph resets the second hand more or less to 0 (a little to the left) but other times to around the 20 second mark. Also, the subdial hand has come loose - I can't see it in any of the photos but I know it's somewhere in the case, as it was visible earlier. It's aged more so than the second hand. That said, the day and date both change properly, both when the hands pass midnight and via the quickset (you depress the crown partway to change just the date, all the way to change both). The internal bezel also turns as it should. Hopefully, though, I've made clear that it obviously needs significant work - at least a service, maybe parts, etc.
Cosmetically, it's also got some good and bad to speak of. The dial is far from perfect - it's got a slightly aged look overall, with notably grayed lume and one notable odd, but small, area of aging (look at the 12 oclock marker). The hour and minute hands show less aging to the lume - almost none, except for a small amount of lume missing from the minute hand - and the sweep seconds hand looks great. The outer bezel looks wonderful - it has one notable ding at about 2:30, but the insert looks absolutely perfect with no visible fading or even scratches. The inner bezel looks very nice, also with no fading, except it looks like the lume at the triangle that goes at 12 o'clock is mostly gone (the triangle is very faint). The crystal has a fair number of scratches, but it's certainly usable in a pinch. The case is in nice shape overall - it's unpolished, with the original brushing visible, but with one medium-sized ding below the reset button along the edge, and some other marks here and there. The caseback shows one medium-sized toolmark, but nothing terrible. The watch doesn't come with a band.
One minor quirk worth mentioning - it has a bilingual English and Roman Numeral day wheel. While the Roman day wheels are usually thought of one of the rarer versions, on this model I would think it should have a Kanji wheel as a JDM "speedtimer." Either I was wrong about that as an absolute, or maybe someone switched them out.
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I'm an amateur collector of vintage Japanese watches, mostly Seiko and Citizen. As such, I won't accept returns unless the watch arrives in different condition than as described. Please examine all photos as they are part of my description. This will only ship internationally via ebay's "global shipping program," which is the (expensive) quote you should automatically see in the listing if you aren't in the U.S. In my first real attempt at using this, I received messages from folks in Spain, England, and France all telling me that it wouldn't let them bid, so I apologize if it does so for you - there's nothing I can do to correct it :(. If you have a feedback score of less than 10, please contact me prior to bidding or I may cancel your bid. I am happy to combine shipping costs as long as whatever I'm selling will fit safely in a flat rate small USPS box, but the Global Shipping Program won't let me do this unless you agree to cancel your auction wins and re-do the sale as a single Buy-it-Now option, so be warned of that eventuality if you are an international bidder. I generally don't consider a buy-it-now option. Thanks and happy bidding!