P2A-463
From The Stargate Omnipedia
A world inhabiting, or once inhabited by, a people with writing very similar to the Latonans or P2A-018. It is possible the two races are related.
DETAILS
HOME TO - Unknown
FIRST APPEARED - N/A
KEY EPISODE
The Sentinel - Dr. Jackson recognizes similarities in the writings of P2A-463 and P2A-018.