Abstract: A receiving case of a disc is displayed with the receiving case locked in a display case to prevent the display case from being left in a shop upon rental. The display case includes a box body having a bottom wall and peripheral walls protruding from edges of the bottom wall, and a lid body at an edge of the box body via a hinge. A lock apparatus of the display case can not be unlocked except at the shop, and a locking part can be retained when unlocked. A receiving case has a box body for receiving a disc, and a lid body with side wall ends rotatably mounted to the box body via pins. The receiving case is fitted in the display case such that the hinges thereof are arranged adjacently parallel.