Inferno Totem/Kupo nut Charm

[Matsume]

Once you have obtained a sufficient amount of inferno totems, you may exchange them for an Ifrit Weapon of your choice by speaking to the NPC Rowena, in the Ul’dah Merchant Strip (5,4).
The kupo nut charm item will be obtainable from the Good King Moggle Mog XII battle, and works in the same manner as the totem.

Sounds like more than one unless one is a sufficient amount.

What he said.