Very similar to the Kon Tiki Sheraton Waikiki Gaping Mouth Tiki Mug: http://www.ooga-mooga.com/cgi-bin/all/pictures.cgi?mode=gallery&mug_id=169
But it says: KON-TIKI VILLAGE RESORT HOTEL on the back.
Bottem says DAGA HAWAII (Can barely make it out.)
Collector Gallery
Tiki Mug Design
Kon-Tiki Village Resort Hotel Gaping Mouth Tiki Mug
in 3 collections
This mug was produced by Daga for the the Kon-Tiki Village Resort Hotel. The tiki has an almost square, gaping mouth. Brown glaze, with a white glaze interior.