This is a SEIKO Skyliner 21 JEWELS pocket watch. The Seiko Skyliner pocket watch is a hand-wound mechanical pocket watch that was launched in the 1960s as a more affordable version of Seiko's "Liner" series, a line of thin, high-end watches. It features a simple, classic design and was mainly favored by railway workers and businessmen, making it a representative example of antique watches. There were also models with a calendar function (Skyliner Calendar), and many had a hand-winding date quick-set function. They are now collector's items. Based on the serial number (094070), this particular watch was manufactured in September 1970 at the Seikosha Suwa factory. It is currently confirmed to be running and operating quite accurately, but as it is an antique item, its accuracy is not guaranteed. - Brand: SEIKO - Model Name: Skyliner - Color: Silver - Country of Manufacture: Japan - Model Number: 6102-0010 Thank you for viewing.