This is a SEIKO MARVEL DIASHOCK 19 JEWELS pocket watch. As an antique item, it shows signs of use, age-related scratches, and dirt overall. A chain is also included, allowing you to enjoy a retro atmosphere. The "Crane Mark" of Seiko was a mark engraved on the cases (such as the back cover) of Seiko products (especially watches) from around 1946 to 1964. It was taken from the "Crane" in the name of "Tsuruhiko Yoshikawa," the chief engineer who built the foundation of Seikosha during its founding period. It was a symbol of the original Seiko case at the time, and after the war, it was a symbol of confidence and quality to compete with Swiss products. It seems to have been engraved on high-end watches such as Marvel. 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 - Model Name: Pocket Watch - Color: Silver - Material: Stainless Steel - Size: Approximately 4.5cm in diameter Thank you for viewing.