The gallery provides valuation advice in the form of appraisals for insurance, donations, and estate settlements as well as performing expert witness services. We also provide curatorial advice for both public and private clientele. 

Dennis Rosenthal has been involved in the art market for over 30 years, with specific training in provenance investigation, conservation, and market valuation. His areas of expertise include American and European works from the 19th and 20th centuries. Mr. Rosenthal has served as an art consultant for private collections as well as an art market consultant for large corporations, auctions, and museums.