Jean-Marie van Isacker graduated in 1976 from the Sotheby’s Works of Art Course in London. He then joined the Sotheby’s furniture department, becoming a member of the their expert team. After helping them develop client strategies for the continental auction market in Brussels and Amsterdam, he moved to New York and joined Christie’s in 1981. During his ten years he conducted many successful furniture and decorative art sales. In 1992 he returned to Europe and his traditional area of expertise to begin his consultancy career.