From Max's website:

"This Papua New Guinea-style mug was designed by Anthony Carpenter and is based on a PNG mask which hangs on the wall at Max’s. This is an edition of 50, each hand painted by our ceramic artists and numbered on the bottom."

The Sepik River is the longest river on the island of New Guinea, and after the Fly and the Mamberamo the third largest by volume. The majority of the river flows through the Papua New Guinea provinces of Sandaun and East Sepik, with a small section flowing through the Indonesian province of Papua.