I previously listed a fish-shaped lock from the Joseon Dynasty (1392-1897), and this item is also a fish-shaped lock with a similar appearance and structure. Although the specific production period is unknown, it is believed to be an antique from the Joseon era. Fish-shaped locks are relatively common online. Inspired by the ancient Chinese legend of "carp leaping over the dragon gate," the fish (carp) shape symbolizes not only "success" and "progress" but also "fertility" due to the fish's ability to lay many eggs. In the Joseon Dynasty, these symbolic fish-shaped locks were crafted with both robustness and decorative appeal, and were widely used on high-end furniture such as Joseon chests and valuables containers. The fish-shaped lock for sale has a tail fin that is leaping upwards. Both sides are decorated with a series of small round patterns created by pressing chisels and other tools, as well as semi-circular patterns that mimic scales, all without being overly ornate. The patterns on the head appear to vary. The material is brass for both the lock and the key. Given its robustness and elegance, it is not difficult to imagine that it was used on Joseon chests and the like. While there are some stains, scratches, and slight verdigris, there are almost no noticeable dents or deformations, and the reddish-brown color of the brass remains. It can be unlocked with the included key, and locking is also possible, but unlocking requires a little "assistance." Normally, when the key is inserted all the way into the keyhole, the spring lock is released, and the tip of the spring-loaded locking shaft protrudes from the body. However, due to aging, it often does not protrude even when the key is inserted and removed. By inserting the key until it stops (at which point the lock is already released) and applying a little "assistance" by applying force to the locking shaft in the direction of the head, the tip will protrude. When separating it from the body by hand, and when returning it to the body, be careful not to let the tip of the locking shaft come out of the hole on the tail fin side. If it comes out and is locked, unlock it again with the key and relock it. The approximate size (cm) and weight are as follows: [Lock] Width 17.5, Height 10, Thickness 2.5 / Locking area (width x height) 6.5 x 1.5, Shaft diameter 0.6 / Weight 488g / [Key] Total length 18, Width 1.4 / Weight 39g / This is an antique lock in the shape of a fish, symbolizing "success" and "fertility," from the Joseon Dynasty, reminiscent of its robustness, weight, and elegance. It can be used not only for collection but also for interior decoration. It can also be used for locking, but please use it with the understanding that it is an aged item. Please be careful about losing the key, and also be careful of dropping or bumping it due to its weight.