The Triganic Pu is a unit of galactic currency, with an exchange rate of eight Ningis to one Pu. This is simple enough, but, since a Ningi is a triangular rubber coin six thousand eight hundred miles along each side, no one has ever collected enough to own one Pu. Ningis are not negotiable currency, because the Galactibanks refuse to deal in fiddling small change.
The Triganic Pu is mentioned in:
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