Mvmt-Case Serial How is the Date Calculated Seiko Serial Number Dating We encourage people to send us additions and corrections. Single player video game typing games to play. You can also view the entire datefinder database. Probably this is the worst most detailed database of all Seiko production since 1950 over the web, including movement revisions (ex: 7S26B or C) and various extra. Simple and quick, this page allows you to determine the exact date of manufacture of a Seiko watch basing on the caliber and serial number printed on the bottom plate or in the edge.You can use the Seiko serial number in conjunction with the movement number to calculate the year of manufacture. The second character can be a letter but the rest are all numbers. Seiko watches have a 6 or 7 character serial number on their casebacks.We design and develop our own movements using leading-edge technology. Seiko is one of the few fully integrated watch manufactures. Ask the seller for a caliber number when inquiring about the product. Seiko did use metal prior to 1990 and the authentic ones usually have a caliber number of 7006 or 7009. If the date and time wheels are metal or silver and the seller claims it is less than 20 years old, the Seiko is a fake. Seiko only uses plastic and has since 1990. I am notified of movements which are searched for but not in there yet, when this happens I try to update it to include those. The Seiko serial number database Details of the Seiko movement database Below is live information about the current Seiko movement database, it is updated regularly (scroll to the bottom to see last updated date). Your results will be shown here.If you don't know how to find these numbers on your watch please read our instructions below. 'When was my Seiko made?' We hear that a lot here at WatchSleuth so we built this page to help you figure it out.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.The calculator uses these codes to do its magic.

Seiko serial number chart