This mug was manufactured by Otagiri for Langerman's Luau in Narberth, PA. The moai design is unusual, as it includes the moai's shoulders, rather than just the head. It's gray, with a deeply concave bottom, and is marked "Langerman's Luau Narberth PA" on the back, and "Made for Langerman's Luau by Otagiri Co." on the bottom.