Oarai Aquarium, Ibaraki Prefecture. Heisei Era / Retro A keychain of a penguin chick that has hatched from an egg. The aquarium's name is in the center, with a red bell and ring. Length: Approximately 9cm Unused. There may be some stains on the eggshell part, but the most noticeable is the faded color of the penguin. Will be wrapped in bubble wrap for shipping.