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Artfact presents "auction catalog archives of prices paid for antique, art, and collectible objects sold by the world's premier auction houses: more than six million unabridged auction catalog entries with available photos and complete research by auction house experts." Auction house information and the fine artist directory are freely available. Browsing of upcoming and completed auctions (with abridged information; images, description, year sold, and auction house) is available with free registration.