From FFXI Wiki
|Temporary Key Items||This ancient key has been weathered|
by the years, save for the single
flawless pearl that gleams softly
from its resting place in the grip.
|Type of Event||Name|
|Mission||Those Who Lurk in Shadows (II)|
- You may choose to receive a reward for this key item when examining the Treasure Coffer in the Tenshodo Headquarters in Lower Jeuno.