When Michael Jordan first pulled the red Chicago Bulls jersey over his head for his NBA preseason debut in Peoria, Ill., against the Indiana Pacers on Oct. 5, 1984, nobody would have guessed he had just created one of the most significant pieces of sports memorabilia in history.

An autographed Chicago Bulls jersey that Michael Jordan wore in a preseason game during his rookie year sold for $4.215 million at an auction that closed Wednesday. Sotheby’s billed it as the only game-worn photo-matched Jordan rookie jersey to publicly surface at an auction. Sotheby’s said a private collector made the winning bid.

An autographed Chicago Bulls jersey that Michael Jordan wore in a preseason game during his rookie year sold for $4.215 million at an auction that closed Wednesday.