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.
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 features.
Please leave a comment in case of incorrect/uncomplete responses. Thank you!
