All art appraisers
William O'Reilly
Independent appraiser

William O'Reilly

Argonaut Fine Art Ltd.
New York · NY · United States

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.

Specialties

Modern art

Services

Estate appraisalInsurance appraisalTax appraisal

Directory sources

Appraisers Association of America Certified Member · Observed Aug 26, 2026