Wisdom Emblem

The Wisdom Emblem is a treasure in. It is actually a playing card of clubs. The number on it is part of the code to the safe in Hero's Hideaway, so it is randomly generated for each playthrough and is different from the number of the Work Emblem, which is also a card of clubs.

Collecting the treasure
The Wisdom Emblem is pinned to a corkboard on the western edge of the Hero's Hideaway by a Relentless Spear. To collect this treasure, you must first knock it down with a rush from Oatchi, then throw 1 Pikmin at it.

Trivia

 * This treasure, as well as the Courage Emblem and Power Emblem, are not only the three treasures needed to open Olimar's bunker in the Hero's Hideaway, but also all happen to represent the three parts of the Triforce in the Legend of Zelda series: Power, Courage, and Wisdom.