The Seiko "6310-0020" is a 21-jewel mechanical hand-winding pocket watch (Precision) manufactured for JNR (Japanese National Railways) railway workers during the Showa era (mainly around the 1970s). It features a highly visible dial and a "second setting" function that allows the second hand to be stopped for time adjustment, and is still popular today as an antique railway watch. It's a beautiful watch, but there is a crack in the crystal at the 7 o'clock position. Based on the serial number (963599), it was made in June 1979 at the Seiko Suwa factory. Currently, it has been confirmed to be running and operating quite accurately, but as it is an antique item, the accuracy is not guaranteed. - Brand: SEIKO - Type: Pocket Watch - Dial Color: White - Hand Color: Black Thank you for viewing.