This is a Seiko railway pocket watch. It was sold during the Japanese National Railways era and has a special engraving of a driving wheel mark on the back cover. It is currently running and features high accuracy due to its quartz movement. The exterior has some damage to the bezel, but the overall condition of the exterior is generally good. The size is 71mm (including the hanging ring) vertically and 50mm horizontally. The large face offers excellent visibility, with only slight differences in the logo compared to the pocket watches currently used by railway conductors. It can be carried around or used as a desk clock. As an option, the original instruction manual from that time can be included for 1000 yen. If you need it, please leave a comment, and the price will be adjusted, and it will be shipped together.