This piece of tattered parchment shows the familiar waters and landmasses of the Deadfire Archipelago, but without the other pieces it's impossible to tell where it points or how to get there.
A note is scribbled in the margins:
"I entrust this fragment to you, brilliant friend, with every confidence that you won't fail to safeguard it. Enjoy your riches on the appointed day.
~Yours in affection,