: Immortalized in Field of Dreams , only five of his autographs are known to exist.
The world of sports autographs is a mix of high-stakes investment and pure fan nostalgia, with a history that stretches back to ancient libraries. Whether you're hunting for a Babe Ruth signature on a vintage baseball or sending cards through the mail to today’s stars, the hobby is more popular than ever, generating over $4 billion in annual sales.
: For glossy cards, rub the surface with a polymer eraser or baby powder first so the ink doesn't bubble. Spotting the Fakes
Some signatures are so rare they are considered the "crown jewels" of sports collecting.