Our Appraisers

Rosoff pic

Charles T. Rosoff, ASA, MRICS

Mr. Rosoff is the president of Appraisal Services Associates, a firm of appraisers that provide forensic valuations of Fine Art, Antiques, Decorative Arts, Residential and Office contents. He has been appraising since 1984, is an Accredited Senior Appraiser designated by the American Society of Appraisers (ASA), is a Member of the Royal Institute of Chartered Surveyors, serves as a Discipline Governor on the International Board of Governors or of the ASA, is a past President of the New York Chapter of the ASA, was the Legal Issues Editor of the Personal Property Journal of the ASA, was on the faculty of the American Law Institute, American Bar Association (ALI-ABA) Post-Mortem Planning and Estate Administration, participated at the Association of the Bar of the City of New York program Divorce in New York in the 21st Century, teaches ASA PP204 Personal Property Valuation—The Legal and Regulatory Environment of Appraisal Practice for the ASA at various universities, taught Appraisal Research Methods at New York University, and has testified as an expert witness  numerous times in multiple jurisdictions. Mr. Rosoff is currently an editor of the annual supplements to Valuation Strategies in Divorce and Valuing Specific Assets in Divorce. Mr. Rosoff has a B.A. degree in History of Art from the University of Michigan, completed the one year training program at Sotheby’s London, completed the Certificate program in Appraisal Studies at New York University, completed all the courses in appraisal practice given by the American Society of Appraisers, attended courses in the graduate program in the History of Decorative Arts from the Cooper Hewitt Museum and has worked for Christie’s New York.

Click here to email Charles Rosoff.

Aleza F. Friedman, DA

Dr. Aleza Friedman has been working for Appraisal Services Associates since 2002. She received her Doctor of Arts in English from St. John’s University, and her B.A. from New York University, graduating summa cum laude with honors in Art History. She is an Accredited Member of the American Society of Appraisers, is past president of the New York City Chapter of the American Society of Appraisers, and has passed the USPAP 20012/13 exam. Along with Charles Rosoff she has been the co-editor of the supplements to Valuation Strategies in Divorce and Valuing Specific Assets in Divorce since 2007. Mrs. Friedman has worked at Exit Art, a non-profit art gallery in New York City, as well as the Brooklyn Museum of Art. She is a member of Phi Beta Kappa and Sigma Tau Delta. 

Click here to email Aleza Friedman. 

Sara R. Olshin, MA

Mrs Olshin has been an appraiser with Appraisal Services Associates since 2003, and is a specialist in Judaica, silver, decorative and fine art for diverse purposes including estate and gift tax, insurance, charitable contribution, and matrimonial equitable distribution since 1991. Ms. Olshin received a B.A. in History from Stern College, an MA in the History of Decorative Arts from the Cooper-Hewitt, National Design Museum, Smithsonian Institution, and a certificate in Appraisal Studies from New York University. Her prior work experience includes providing curatorial services at The Jewish Museum, serving as a consultant for private dealers and curators, and working for an antique furniture gallery in New York City. Ms.Olshin has assisted in the compilation of several publications including such treatises as Antique Garden Ornament: Two Centuries of American Taste by Barbara Israel, and Five Centuries of Hanukkah Lamps from The Jewish Museum: A Catalogue Raissone by Susan Braunstein.

Click here to contact Sara Olshin.

Sadie Howe, MA

Ms. Howe earned a BA in History of Art from Boston University and a MA in History of Decorative Arts from the Cooper Hewitt Parsons. She interned at Winston-Wachter Fine Art NY, Christies NY, the Indianpolls Museum of Art, and the Boston Center for the Arts Mills Gallery.  

Click here to email Sadie Howe.

Our Colleagues And Specialists

Linsner picture

Kenneth J. Linsner, ASA

Mr. Linsner has been appraising since 1970. He is a Senior Member of the American Society of Appraisers, a Member of the Appraisers Association of America, and a member of the American Institute for Conservation. Mr. Linsner was trained at the Institute of Fine Arts, New York University, and its Conservation Center. He was a consultant in conservation at the Brooklyn Museum. Mr. Linsner was designated as a “Qualified Source” by the Department of Treasury of the United States and the Office of the Attorney General. He has acted as an expert witness and provided litigation support in many Federal and Civil cases involving artworks, their authenticities and their values. A specialist in the materials and structure of works of art, he has written on the scientific detection of forgeries and condition analysis. Click here to contact Kenneth Jay Linsner, ASA directly.

William Warmus

Mr. Warmus is the son of a glassblower at Corning Incorporated. He studied art history and philosophy at the University of Chicago. Warmus became the curator of modern glass at The Corning Museum of Glass in 1978, and curated three landmark exhibitions: New Glass, which was also shown at The Metropolitan Museum of Art and at the Louvre; Tiffany’s Tiffany, which focused on the masterpieces Tiffany had in his home and studios; and the first major exhibition in North America of Emile Gallé’s work. Since leaving the Museum, Warmus has pursued a career as an independent curator, historian, and appraiser, specializing in modern glass, abstract art, and the aesthetics of the natural environment. The New York Times profiled him as a “Stylemaker,” while the University of Chicago magazine described him as a classical modernist. He is the author of more than a dozen books, including biographies of Tiffany, Lalique, and Chihuly. His book, The True History of Glass—an overview of the art, history, and sociology of contemporary glass—will appear in late 2012. Warmus was the editor of Glass Magazine, faculty member and visiting artist at the Pilchuck School of Glass, and executive secretary of the Glass Art Society. He is the recipient of the AACG award for outstanding contributions to contemporary glass.

Edith Yeomans, ASA

Ms. Yeomans is a professionally trained appraiser and an Accredited Senior Appraiser with the American Society of Appraisers, Edith Yeomans has over 25 years of experience in the arts in Canada, including working for a prominent art dealers’ association, arts management, and copyright licensing. She holds a BA (Hons) in art history from McMaster University and is an art specialist with extensive knowledge of contemporary Canadian and international art scenes. Active in Toronto’s arts community, Ms. Yeomans has been a member of the board of the Toronto Outdoor Art Exhibition since 1991, and was the chair of the board for three years. She is currently the personal property discipline governor on the American Society of Appraisers’ board of governors and previously served as the president of the society’s Toronto chapter.  Ms. Yeomans is on the faculty of the American Society of Appraisers Principles of Valuation education program and teaches the Introduction to Personal Property Valuation course. Her articles on valuation issues have been published in Canadian and American journals, and she has spoken to a variety of groups about professional appraisal practices. 

Stephen Sweeting, MRICS

With over 22 years of direct experience as an appraiser, and additional experience in both auction and dealer components of the business, Stephen P. Sweeting was professionally trained through the American Society of Appraisers, qualifying as an Accredited Senior Appraiser (ASA) in 1999. Transitioning to the Royal Institution of Chartered Surveyors (RICS) in 2009, he is accredited as a Member (MRICS) and part of the Arts & Antiques and Valuation professional groups. Mr. Sweeting holds a Master of Arts-Integrated Studies degree (MA-IS) specializing in Cultural Studies from Athabasca University and a Bachelor of Arts degree (BA Hons) from the University of Toronto. A prolific writer on appraisal and related topics, his articles have appeared in Canadian Insurance, the American Society of Appraisers’ Personal Property Journal, the Royal Institution of Chartered Surveyors’ Arts Surveyor, the Journal of Advanced Appraisal StudiesThe Globe and Mail, and a number of other publications. Mr. Sweeting teaches Athabasca University’s Masters-level “Art and Crime” course and he is the editor of The Art and Crime Gazette, a website reporting on “events, articles and books generated at points of intersection between art and crime.”