This small bronze coin may appear only to be the size of a dime, but contained here in holds magical powers

It is said (by those who speak of such things) the bearer of such a coin has half a clue as to what is going on in the world around them. To verify this one only needs to turn the face of the Dude around to discover the incantation inscribed "Good for half a KLU". Yes indeed, one may offer it to the clueless so that they may not be completely unarmed.