A miniaturized, keychain version of Bandai's full-sized "Congratulations! 1997 You are now officially approved as a Japan Pro-Spinner" award yo-yo. The full-size version is very hard to find, in any condition.
To see all mini yo-yos in this museum, in the left panel, click Exhibits.
In the right pane, in the Name/Model field, type mini, then click Browse.