The cards everyone knows
Mantle, Jordan, Griffey. Twenty-five of the finest cards ever made, priced every day against verified sales from auction houses that gave us permission to show them — and written about honestly.
Enter the index →The cards your family will inherit
A serious collection is usually understood by exactly one person — which card is the good one, which is worth more than it looks, which should never be sold whatever it is worth. We write that down, so the people who inherit it are not left guessing.
See what we make →Why a financial planner writes about cards
The Heirloom Index is written by Gregory S. Ostrowski, a Certified Financial Planner™ professional who has collected since he was a kid, and for a long time now the kind of cards on this site.
When a collection changes hands, the questions a family has are half hobby and half financial — and they get asked of whoever shows up first.
Judge the work first
All of this is free, and always will be. It is the same research, done in public.
MJ1986
Michael Jordan
The card the modern hobby was built on. Jordan rising to the rim in his Fleer rookie — the most important basketball card of the last forty years, and the one every serious collection is still measured against.
Read the card’s story →The Heirloom 25
A curated benchmark of the finest.
MM1952
BR1933
LJ2003
WC1961
NR1968
KB1996
WM1951
twenty-five →
Three Indices
The Vault
Some cards transcend the market entirely.
Step inside →What kind of collector are you?
Six questions. Twelve collector alter-egos — from The Icon to The Future. Find the legend whose collecting spirit is unmistakably yours.
Find your collector →