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This is a review of the variations found in the 6139-600X series of watches. Hopefully this will add to the other reviews already posted and answer some questions you may have about the different variations available. I'm no expert and may leave some information out or be incorrect about my observations so please bear with me. I've compiled this information over the last year and some if it is based on my own personal observations as a collector. Before we get started I'd like to give thanks to three kind hearted individuals, Ken Setser, Lew Brown, and Jonathan aka Swedefreak[FONT=Arial, Helvetica, sans-serif] for their patience with all my many questions over the last year, their help with bringing several of my watches back to life and for tools and tips for doing the basics myself. I'm sure I might have left several others out but my thanks goes out to them too. Without this forum and the SCWF I could'nt have learned all I have in the last year. My watch is off to all those with helpful hints, tips, and knowlege who frequent these forums to help others out with this hobby!


Model Numbers
Lets start off with the various model numbers. 6139-600X models have basically four different possibilities that I'm aware of. 6139-6005 + 6139-6009 are USA models while 6139-6000 + 6139-6002 are non-USA models. They are all basically the same watch with a blue + red non rotating outer tachometer bezel and a yellow or black rotating inner bezel with 0 to 60 minute time increments. Any other color inner bezel other then the two mentioned have been faded by UV rays.
In order: 6139-6000, 6139-6002, and 6139-6005. {6139-6009 photo not my in database}


Case Variations
Next up is the case. There are two style of cases. The first is the early case with a notch cut out above the crown. This case was used in the first year of production which was 1969 through early 1970. Sometime in 1970 this notch was eliminated and through the end of production which I believe was 1978 all the cases are the same.
March 1970 notched case


1971 case without notch




Dials + Case backs
The most popular sunburst dials come in three different colors. Yellow, blue, and silver. I'm not sure the silver dial version was truly a Seiko option or a dial switched from another watch in the 6139 series as I have yet to see any 6139-600X silver dial versions in any Seiko Catalogs. If anyone is aware of a silver dial 6139-600X in a Seiko catalog please bring it to my attention. Out of the three different colors their are two if not three different variations of each color. I have yet to see a silver "proof" dial although I believe one exists. The early dial used in the first year of production reads Water70mProof centered on the left side of the dial at the 9 o'clock position. These watches also read water proof on the case back. From what I can tell the "Proof" watches were in production until February 1970 according to the watch in the photo below. In March of 1970 the script changed to read Water70mResist along with the case back according to two of the watches in my collection. The last dial had no script at all in the 9 o'clock position of the dial but water resistant remained on the case back. I'm not sure of the exact date this dial went into production but I believe it was in late 1972 or early 1973.
Proof dial from 1970


Resist dial from 1971


Plain dial from 1973




Bracelets

The 6139-600x series of watches had three different styles of bracelets. The straight oyster, the tapered oyster, or the stelux president style. From what I can gather the straight oyster was used from 1969 up until about 1975 at which time they redesigned it to taper out where it meets the lugs of the watch case. The tapered oyster bracelet was used from 1975 until the end of production. I don't have any dates concerning the stelux president style bracelet.
Straight and tapered oyster side by side.


Stelux president style.


Straight oyster.


Tapered oyster


Unanswered questions:
Does anyone know what year and month 6139-600X dials switched from Resist dials to plain dials?
Does anyone know if a 6139-600X Silver "proof" dial exists? Although I beleive they do I have yet to see one.
Does any one have a catalog photo of a 6139-600X silver dial?
Does anyone know the exact month and year the oyster bracelet switched from the straight design to the tapered design?
Does anyone have any dates concerning the stelux president style bracelet?

:thanks
Links with additional information submitted by other members of this forum and the SCWF
Water proof verses water resistant:
https://www.watchuseek.com/showthread.php?t=209700
Seiko 6139 catalog:
https://www.watchuseek.com/showthread.php?t=258711&highlight=seiko+6139
Buyer's guide:
http://www.larrybiggs.net/scwf/index.php?mod=103&action=1&id=1140376570

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About the bracelet, seems to me that exists also another style:



What about that style? Is it correct?
Bye!
 

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[ If anyone is aware of a silver dial 6139-600X in a Seiko catalog please bring it to my attention.]

I own an original Silver Dial 6139-6002. I have the original box and all. My father brought one back for each of the boys in our family. A Sliver Dial, a Blue Dial & a Yellow Dial.
 

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Discussion Starter #7
[ If anyone is aware of a silver dial 6139-600X in a Seiko catalog please bring it to my attention.]

I own an original Silver Dial 6139-6002. I have the original box and all. My father brought one back for each of the boys in our family. A Sliver Dial, a Blue Dial & a Yellow Dial.
Thanks for the update Rod. I've also been made aware that silver dial 6139-600X's dial codes match other 6139-600X's with yellow + blue dials so this along with your information confirms the originality of silver dial 6139-600X's.
Tom
 

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I wanted to bring up another dial variation. I have a 6139-6002 with Blue dial that my dad purchased brand new in March 1971. It has the 70m Resist dial, but unlike any of the dials you've shown it has no text under the Seiko logo. I notice that all the examples you show have "Automatic" with and without "Chronograph" text inscribed under. Just thought I'd chime in.
 

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Discussion Starter #9
I wanted to bring up another dial variation. I have a 6139-6002 with Blue dial that my dad purchased brand new in March 1971. It has the 70m Resist dial, but unlike any of the dials you've shown it has no text under the Seiko logo. I notice that all the examples you show have "Automatic" with and without "Chronograph" text inscribed under. Just thought I'd chime in.
Do you have a photo? I'd be interested having a look at it.
Thanks, Tom
 

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Discussion Starter #11
Now accepting light case refinishing + polishing along with new Seiko gaskets and replacement mineral glass crystals. PM me for details.
 

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I picked up an example of a 6139 for dirt cheap. I've established that it was manufactured in 1976 by searching the serial number. It looks like my crown (and i'd assume the stem) have been changed. The dial is different in that it doesn't have any water resist or proof labels. I've also noticed that the bracelet is a president style but if you look at mine (pictured) it comes out from the head differently. It flares out from the end link and tapers down. The links are also different in that the center link is much more narrow than the outer links, which is not consistent with your pics; however, the end links match the bracelet - I'm going to assume it's an aftermarket bracelet unless anyone here knows better. The dial is slightly misaligned (I've straigtened out the chapter ring since this picture was taken). I'm not sure if I should take it for an overhaul just to clean it up and maybe have the lume redone, and the crystal polished, but I think I'll leave it for now. I love the watch and wear it often. It keeps great time, I think I'll hang onto it for a while.

1375046d1391801717-seiko-6139-6002-pogue-12368889123_54b9dc27a1.jpg
 

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Discussion Starter #13
Your crown, and most likely stem, have been changed. If the inner bezel doesn't rotate by turning the crown the spring and gear is missing. Another sign that it has the incorrect stem. The bracelet is from a 6139-7002 which also fits 6139-600X end links of the stylux president style bracelet. The difference is the 7002 bracelet flares out at the end link where the president does not. 73' and up examples do not have any "proof" or "resist" text on the dial.
 
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