Two beautiful Otagiri mugs, $10 each. Otagiri Mercantile Company (OMC) was one of the original manufacturers of ceramic Tiki mugs. It was headquartered in San Francisco, but the majority of its mugs were produced in Japan. OMC produced the most Tiki mugs in the 1960s and 1970s, and it eventually sold to a larger corporation in the mid-1990s. It has since stopped producing its line of Polynesian-inspired ceramics.