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Start here on a sample item. Sign up to run it on any piece and export a dated, defensible report.
That's 3 of 18 comparables. Sign up to see the full set and export a dated, defensible report.
Sign up to export your report → No commitment · cancel anytimeRun a sample benchmark. Sign up to track your own brand and export a board-ready chart.
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Sign up to export the chart → No commitment · cancel anytimeValue a sample collection. Sign up to track yours and set alerts.
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Sign up to save & set alerts → No commitment · cancel anytimeRun a sample client valuation. Sign up to manage real clients and send updates.
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Sign up to send the update → No commitment · cancel anytimePreview a sample query. Sign up to run any query and pull the full dataset.
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Sign up to pull the dataset → No commitment · cancel anytimeFrom Elizabeth Taylor’s jewels to Steve McQueen’s Ferraris — famous collections, traced through the real auction sales behind them. Explore the provenance in ALT/FNDATA.
Elizabeth Taylor
Jewelry · Christie's
David Bowie
Fine Art · Sotheby's
Steve McQueen
Collector Cars · RM Sotheby's
Jerry Seinfeld
Collector Cars · Gooding & Company
Eric Clapton
Fine Art · Sotheby's
Barbara Hutton
Jewelry · Sotheby's
Duchess of Windsor
Jewelry · Sotheby's
Jacqueline Kennedy Onassis
Jewelry · Sotheby's
Madonna
Fine Art · Sotheby's
Steve Martin
Fine Art · Sotheby's
James Coburn
Collector Cars · RM Sotheby's
Gina Lollobrigida
Jewelry · Sotheby's
Adam Carolla
Collector Cars · Gooding & Company
Magnus Walker
Collector Cars · RM Sotheby's
Peggy & David Rockefeller
Fine Art · Christie's
Paul G. Allen
Fine Art · Christie's
Harry & Linda Macklowe
Fine Art · Sotheby's
Victor & Sally Ganz
Fine Art · Christie's
Leonard A. Lauder
Fine Art · Sotheby's
Bunny Mellon
Fine Art · Sotheby's
Yves Saint Laurent & Pierre Bergé
Fine Art · Christie's
Hubert de Givenchy
Fine Art · Christie's
Oprah Winfrey
Fine Art · Christie's
Michael Jordan
sports · Sotheby's
LeBron James
sports · Sotheby's
Muhammad Ali
sports · Heritage Auctions
Serena Williams
sports · Goldin Auctions
Kim Kardashian
Jewelry · Sotheby's
Kanye West
sports · Sotheby's
Beyoncé & Jay-Z
Fine Art · Sotheby's
Instant, data backed value estimates for any piece.
Track your passion assets on real auction prices.
Search the entire market by object, brand and result.
Interactive dashboards and indices across every asset class.
Auction performance by parent group and house.
Price indices, demand and resale strength by brand.
Full database access via SQL, JSON and API.
Add the data to Claude, ChatGPT and more.
Ask the dataset questions in plain English.
Whether you value and sell, collect and advise, or build and research, the same realized-price data works for your corner of the market.
Defend a valuation with comparable sales, benchmark a brand against its rivals, and time a sale to rising demand.
Value your holdings, watch the brands and categories you care about, and advise on when to buy or sell.
Tap 19M+ realized results over REST, MCP, SQL and bulk export for analysis, modelling and AI.
Query it from your AI assistant, pull it into a notebook or warehouse, drop it into a spreadsheet, or push it to your tools, over MCP, REST, SQL, exports and webhooks.














Plain-English guides to valuing art and collectibles for every IRS filing, each backed by comparable sold prices.
Valuing art and collectibles on Schedule F at date-of-death fair market value.
Read the guide →Valuing gifts of art and collectibles, and the appraisal that starts the clock.
Read the guide →The qualified-appraisal thresholds for donated art and collectibles.
Read the guide →Selling art and collectibles: the 28% rate, Form 8949 and Schedule D.
Read the guide →Valuing art and collectibles for a year-end charitable deduction.
Read the guide →