WHO WE ARE Senior Partners
Brian Kathenes
Brian Kathenes is the Managing Partner of National Appraisal Consultants, L.L.C. He is Chairman of the New York Winter Antique Show Vetting Committee on Autographs, Manuscripts & Rare Books and is responsible for vetting all autographs, documents and manuscripts displayed and sold at this most prestigious show. Mr. Kathenes has presented seminars and symposia for over 172,000 participants and clients including the International Society of Appraisers ISA CAPP Course 101 and Appraisal Techniques and Practical Information for Archivists and Librarians from the National Archives and the Library of Congress in Washington, D.C.
Mr. Kathenes has appeared on over 160 television and radio programs and has been quoted in over twenty magazines and newspapers including the New York Times, Business Philadelphia, Successful Meetings, and USA Today. He is also the author of the syndicated column The Autograph Detective and is the host of Hobby World, a weekly Cable TV program relating to hobbies and collectibles.
He is past President of the New Jersey Chapter of the International Society of Appraisers, the First Director of Education for the Universal Autographs Collectors and a member of the American Philatelic Society Appraisal Committee. His expertise includes stamps, coins, sports memorabilia and paper collectibles, and he holds the first and only Specialist Certification in the Appraisal of Personal Property (S-CAPP).
Leon Castner
Leon Castner holds a Ph.D. in Valuation Science and is a Senior Partner of National Appraisal Consultants, a firm specializing in personal property appraisals and appraisal consulting, insurance reports & research, pretrial consultation, and IRS tax-related appraisal matters. He holds a CAPP in Appreciable Residential Contents and is an adjunct professor of Fine and Decorative Arts at Centenary College.
Mr. Castner is a Registered Contractor for RTC, FDIC, US Marshall's Office, Attorney General, TASA, and has provided major appraisals for these organizations. He is the co-presenter of Appraising the Appraisal - a professional development seminar for insurance agents, claims managers, and trust officers, and is a Panel Member of the American Arbitration Association.
Leon is also past Chairman of ISA Designation and Review, and past President of the New Jersey Chapter of the International Society of Appraisers. He has been honored with The Auctioneer of the Year Award by the New Jersey State Society of Auctioneers and has received the ISA's Outstanding Member of the Year Award.
