The dial and hands are radically different in style from the classic divers. There are some who doubt the authenticity of the black indicator ring, but enough evidence is present to suggest these were an official release. These marks are often incorrectly identified as some kind of military marking or similar but a much these are due to a much simpler explanation. All 200m divers have uni-directional locking bezels with 120-click graduations. Another useful resource we found during our research was on the Retro Seiko website. It's non-hacking and has a quickset date-only calendar mechanism. Do you know anything about the Grand Seiko model number scheme? With such a rich history, it is no wonder that the exact production year of many of the watches is difficult to determine.
There are a few variations online for what the five main attributes are in a Seiko 5 but the list below is the most widely accepted in recent years. The 600X also has a rotating indicator ring, or what is sometimes called an inner bezel. These can become sticky through time and might also affect the water resistance of the piece. For many of Seiko's movements we know the first year they were produced and for most movements they were produced for less than 10 years. From then on until the end of its production, 6139s have featured the non-notched case.
Thank you all for making this Seiko Divers Reference a great collective effort! Any way I guess that's tough. Establishment of subsidiary in Panama. The six digit serial numbers are found on Seiko models beginning from 1966. For an in-depth technical analysis of the 7S26 movement, see. There is no shortage of tools! The first digit of the serial number represents the year within the decade for example, if your watch was made in 1995, the serial number would begin with a 5. The 6139-6005 and 6139-6009 are those intended for North America.
In 1967 and 1968 Seiko appears to have used both 6 and 7 digit serial numbers and from 1969 onwards all 6 digit serial numbers. By 1971 almost all models had changed from Proof to Resist markings. For each watch you'll find model numbers, pictures, specifications and a list of similar watches as well as links to sellers and appropriate accessories. If more than one date is returned then either I lack data for that Seiko movement or it was made for over a decade. The 6139 Bracelet There are four known variations for the bracelets of the 6139-600X series.
They are able to harness motion to automatically rewind the spring. Introduction of world's first very-fine adjusted ultra-accurate Twin Quartz watch, with less than five seconds deviation per year. Innovative and luxurious design, reliability and staying abreast of new technology have kept Seiko at the top of timepiece manufacturing. I subsequently looked at a Singapore supplier just out of interest as my budget and brain are exhausted for the time being. If you know of something which should be included on this page please let me know and I will add it. The numbers on the dial refer to the dial code and is not used for dating the watch. It has 17J and runs at 21,600 bph.
Previous to this Seiko used a seven digit serial number with a similar format. It is located on the case back for solid metal backs or printed on the glass for see-through case backs. I cannot read the serial number on the gents watch as the bracelet blocks my view. They are the white and black indicator rings. Is such a delay unusual or a problem? One small difference between the 7S26 divers and their predecessors is that the crown position on the 7S26 has moved to 3:45 o'clock instead of 4. One pleasant surprise is it features a Breitling Navitimer, or copy. When the battery is fitted at the factory the first suggested battery change time will be marked on the case.
While most of the seven digit serial numbers followed the Year, Month, Production format there are some examples that seem to follow a Month, Year and Production format. The watch was bought by a friend for me when he was visiting Port Moresby in 1977. The Bezels Aside from being the first automatic chronograph in space, the 6139-600X series also has another popular identifying factor, it's outer bezel. The page includes a calculator along with instructions and example images to help you find the movement caliber, case code and serial number on the back of your watch. Cross reference the Movement number with the case number to find the time scale of when your watch was produced. The 6306 divers are much rarer to find than the 6309s because their production years were relatively short and they were Japan-only models that use a 21J hackable movement compared to the 17J non-hacking movements in the 6309s.
The information here is compiled from postings of folks who share their knowledge and insights with each other every day on the. It has 14 kt gold back. . Other Useful Sites Seiko has a site dedicated to the 50th anniversary of the Seiko 5 line but in general they do not provide very much information online about Seiko 5 watches. The markings will indicate the year number and this is divided down into quarters.
This helps us narrow down the decade. This can tell you the movement type, date of manufacturer, how to open the case, which company produced the product, what the case is made from and the specific case design code. It is made of plastic with markings for 60 minutes. As with any part of WatchSleuth we encourage people to with suggestions, corrections or any other information that would make our site more useful. The 6105 divers use the mechanism and not a screw-down crown. The first one being the H-link bracelet with straight ends, which was used on the 6139-600X series from its introduction until 1973. You can also click the Edit link on any watch detail page then use the icons to contribute information for specific items.