THE HEIRLOOM INDEX

An American story,
told through collecting.

Theirs, and yours.

The
Market

The thirty-nine cards we follow, every grade listed this morning, with every auction sale verified and linked. Free to read, and a guide for when a collection changes hands.

The Heirloom 25 1,073.85 Twenty-five of these cards, each tracked at one fixed grade: the index the rest are measured against, read twice daily from asking prices. See the twenty-five →
39 cards followed 5 houses on the record 19 places to buy and sell, tracked every sale verified and linked

Careers, in cards

A whole career, card by card. Tap a player.

Michael Jordan1984–1997 · 12 cards Mickey Mantle1951–1969 · 7 cards Babe Ruth1933 · 4 cards LeBron James2003 · 7 cards Wilt Chamberlain1961–1972 · 5 cards Nolan Ryan1968–1980 · 6 cards Kobe Bryant1996 · 7 cards Willie Mays1951–1973 · 7 cards Hank Aaron1954–1976 · 7 cards Jackie Robinson1947–1956 · 7 cards Bill Russell1957–1968 · 4 cards Tom Brady2000 · 7 cards Lou Gehrig1925–1934 · 6 cards Ted Williams1939–1959 · 6 cards Kareem Abdul-Jabbar1969–1988 · 7 cards Roberto Clemente1955–1973 · 7 cards Jim Brown1958–1966 · 6 cards Jerry Rice1986–2001 · 5 cards Joe Montana1981–1985 · 5 cards Sandy Koufax1955–1966 · 5 cards Ken Griffey Jr.1989–1993 · 7 cards Walter Payton1976–1986 · 5 cards Stephen Curry2009 · 6 cards Shohei Ohtani2018–2021 · 5 cards Drew Brees2001–2021 · 6 cards Derek Jeter1993–2014 · 7 cards Cal Ripken Jr.1980–1998 · 6 cards Mike Trout2009–2011 · 4 cards Giannis Antetokounmpo2013–2014 · 6 cards Aaron Judge2013–2017 · 5 cards Patrick Mahomes2017 · 5 cards Luka Doncic2018–2019 · 6 cards Victor Wembanyama2022–2025 · 5 cards Travis Kelce2013 · 3 cards Joe Namath1965–1973 · 6 cards Mike Schmidt1973–1989 · 7 cards Peyton Manning1998–2012 · 6 cards
Gregory S. Ostrowski, who writes The Heirloom Index

Who writes this

The Heirloom Index is written by Gregory S. Ostrowski, who has collected cards since he was a kid. By profession he is a CERTIFIED FINANCIAL PLANNER® professional, which is part of why the site pays attention to what happens when a collection changes hands. The Heirloom Index is a separate venture: it does not offer financial planning, investment, tax or legal advice, and it is not affiliated with his advisory firm.

More about how this is made →

Judge the work first

The research is free to read, and the index has no paywall. It’s the same research we rely on ourselves, done in public.

Price history of the 1952 Topps Mickey Mantle — every verified public-auction sale, by grade, on a log scale What a card page holds. The 1952 Topps Mantle: 225 verified public-auction sales, by grade, each dated, credited and linked to its lot. Every card in the index has a page like this. Open Mickey Mantle’s page →
Weekend Reading · October 23, 2026
Milwaukee, 1957

The Brewers open the World Series on October 23. The only time a Milwaukee team won one, Hank Aaron hit .393. Here's that October and his rookie card, a signed Babe Ruth card that brought $976,000, and a $14 million Jordan jersey that broke a record two weeks old.

Read this week’s edition →