| http://www.w3.org/ns/prov#value | - He has worked with auction houses since the 1970s and was director of Asian Arts at Skinner??s Auctioneers for 16 years and built the department from annual sales of $230,000 to $11 million annually.As an appraiser, Mr. Callahan??s greatest expertise is in the area of Asian art, culture and customs, including Chinese, Japanese, Korean, Vietnamese, Khmer, Thai, Burmese, Ottoman Turkish, Armenian, A
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