
William O'Reilly
This profile reflects public professional-association directory records observed by Vasari through Aug 26, 2026. Verify credentials, services, and availability directly with the source association. Inclusion is not a Vasari endorsement.
About
William O’Reilly has been active in the international art market for more than 25 years, as a specialist, auctioneer, dealer, adviser and appraiser. In that time he has gained extensive experience assisting clients at the highest level with the appraisal, acquisition, sale and donation of paintings, sculpture and works on paper from the Renaissance to today. William founded Argonaut Fine Art Ltd. in New York in 2022 to provide a full range of independent appraisal services as well offering advice on the art market for both buyers and sellers, with an emphasis on Impressionist and Modern Art.
