A personal property appraiser specializing in numismatics, he has more than 25 years of experience in valuation, including more than 15 years of expert witness involvement in matters related to coins, currency, medals, and related collectibles. His work includes consultation, depositions, and testimony in disputes involving appraisal methodology, asset valuation, and ownership issues, particularly in estate and collection-related matters.

His expertise centers on numismatic appraisal, supported by more than 25 years of experience evaluating coin collections and related assets, along with broader work in personal property valuation involving antiques, fine art, collectibles, memorabilia, and gems. He serves as president of an appraisal services firm and has prior experience as an appraisal and brokerage executive, with longstanding involvement in litigation support since the mid-1990s. His background also includes published work in numismatics and advisory roles supporting historical and museum-related initiatives. His work has additionally involved appraisal review, probate and estate valuation, donation appraisal, Holocaust-related numismatic collections, software valuation, and ethics in appraisal practice. He has further participated in leadership, advisory, editorial, and committee activities with organizations including the American Numismatic Association (ANA), the American Society of Appraisers (ASA), the Beverly Hills Bar Association (BHBA), the National Association of Auctioneers (NAA), the Association of Appraisers-On-Line (AOA), IEEE, and the Simon Wiesenthal Center/Museum of Tolerance, including service as Treasurer, Board of Examiners participant, technical committee member, newsletter editor, numismatic advisor, and standards contributor.