This is how this tool works, I have collated the manufacture dates for as many Seiko movements as I could find which this tool uses along with the date code from the serial number. Started in Chicago in 1882, manufacturing gold cases, mostly 10K. Niebling, Whitmore Publishing, Philadelphia, PA, 1971 (available on loan by mail to members from the ): From page 48: The Chicago Watch Case Co. There are visual clues as to which decade the watch may be from but the easiest way is by using the Seiko movement number, if you can find the date range for the particular Seiko movement you are likely to be able to pinpoint the exact date. Crescent Watch Case Co Serial Numbers 4,5/5 4491 reviews Ralph: According to 'History of the American Watch Case,' Warren H.
The letters O, N and D are used to represent October, November and December. As only 1 digit is used for the year this will only show you the last digit of the year, the decade cannot be found from the serial number, more on this later.įor the second digit 1-9 covers up to September. The first digit translates to the year and the second shows the month. This serial number contains digits indicating the date. Get your laptop or pc serial number or product id easily Click here for more detail. Seiko watches use a 6 or 7 digit serial number stamped on the caseback.
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The easiest way to find the date of a Seiko serial number is to use the automated Seiko serial number decoder but this page explains how to do it manually.
Date a Seiko by serial number How to decode the serial number on a Seiko watch
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