CollectorGrade.ai
The world's ten most important collector categories.
100 chapters. Every guide written to the standard the category deserves. Free, always.
Watches
From reference numbers to the grey market. Everything you need before spending a pound on a serious watch.
Classic Cars
Matching numbers, barn finds, and the restoration trap. The complete guide to buying and collecting classic cars.
Trading Cards
PSA grades, population reports, and why the 1952 Topps Mantle sold for twelve million dollars. The full picture.
Sneakers
Deadstock, colourways, and the resale market decoded. How the sneaker collecting world actually works.
Fine Art
Provenance, authentication, and the primary market. How to start collecting art without getting it wrong.
Sports Memorabilia
Game-worn jerseys, signed cards, and the authentication problem. The serious collector's guide to sports memorabilia.
Wine
En primeur, provenance, and why storage matters as much as the wine itself. The complete introduction to collecting wine.
Whisky
Closed distilleries, independent bottlers, and the investment case. Everything you need to start collecting whisky seriously.
Handbags
The Birkin allocation system, authentication, and why certain bags outperform most asset classes. The full guide.
Books
First editions, dust jackets, and association copies. The collector's guide to rare and antiquarian books.