An appraiser is a professional who determines the value or authenticity of a work of art or other materials. Before hiring, you may wish to inquire about the appraiser's qualifications and fees.
American Society of Appraisers
http://www.appraisers.org
Antiquarian Booksellers' Association of America
http://www.abaa.org
Antiques Roadshow (Public Broadcasting System television show)
http://www.pbs.org/wgbh/pages/roadshow/series/appraisers
Online Appraiser Index with contact information of experts that have been featured on the show.
Appraisers Association of America, Inc.
http://www.appraisersassoc.org
Search online database for association members.
ArtBusiness.com
http://www.artbusiness.com
Bonhams
http://www.bonhams.com
This auction house also features valuation days when patrons can bring in a limited number of artworks for a brief appraisal.
Christie's Appraisals, Inc.
http://www.christies.com
International Foundation for Art Research (IFAR)
http://www.ifar.org
Provides authentication services (Telephone 212-391-6234). IFAR charges an initial, non-refundable $250 deposit at the inquiry stage. This will be applied to the basic $2,000 cost if IFAR is able to undertake the research and the client and IFAR agree to proceed.
International Society of Appraisers
http://www.isa-appraisers.org
Lofty
https://www.lofty.com
An expert-reviewed, online marketplace for valuable fine and decorative arts. Provides free appraisals for items over $1,000.
Los Angeles Modern Auctions
http://www.lamodern.com
Sotheby's
http://www.sothebys.com