Although there are so many knives and swords that I drool over, and lust for, if I were in a position to acquire it, I would ask for Miyamoto Musashi's Bokken.
I feel it symbolizes, moreso than even his daisho, the ultimate perfection of the warrior spirit and Bushido. To have reached a plane of skill and purity, wherein you can no longer in good faith take advantage of a lesser opponent by using an equal weapon, is the greatest of all goals. This I believe to be true, whether your weapon is the sword, the abacus, or the pen. Thus, the ideal that the wooden katana represents makes it far more priceless to me than any other blade.
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It's the SUSPENSE that kills me! --Bugs Bunny