Pirate ticket

From YPPedia

The pirate ticket is a trinket given to pirates who won a serpent familiar during the Halloween Promotion Bonanza in October 2008. It exists only in one color, and is no longer available.

Since the familiar had not been released at the time, and Ocean Masters wanted to keep it a secret, the pirate ticket was used to represent the familiar. It was initially untradeable, and was inscribed with "Redeem with an oceanmaster for one new mystery familiar.", but when the serpent was released and given to the pirates, the ticket was replaced with another identical, but tradeable, ticket.