This is a phantom YAMAGUCHI TOKEI JAPAN alarm clock from around 1955, sold by Yamaguchi Clock Shop. The dial is marked with SUN EIKO. When the mainspring is wound, the second hand starts moving, and the alarm will sound when set. Since there are no instructions, the details are unclear, but the top right mainspring, the middle alarm time set, and the left bell set are used to set the time. The second hand makes a relatively loud ticking sound. *Note: It gained about 5 minutes per day. Please check the condition in the photos. (There are scratches, stains, rust, etc., and some minor imperfections that may not be visible in the photos.) I don't know anything beyond the details above, but I will provide additional images if needed, so please purchase with your understanding. This is a clock from about 70 years ago, so please purchase with an understanding of its vintage condition. There is no warranty, and it is sold as-is. It would also be lovely as an interior decoration, creating a wonderful atmosphere. Thank you.