Morinaga Chocoball's Kyoro-chan - Showa Retro Item - Sound Name Stamp Holder. You insert a stamp into the hole on the back of Kyoro-chan and use it as a stamp (see the last photo). Although it's unused, it's written that it makes a "Queck Queck" sound when stamped. Box size: 7.5cm x 7.5cm x height 10cm. The box has some damage due to storage.