Transcript for WWII vet, retired janitor stored millions worth of sports memorabilia
Finally tonight, the treasure in the attic. About to hit auction. It could be worth millions. Reporter: They were some of the greats -- babe Ruth, Lou Gehrig, and Mickey mantle. Mickey mantle follows with another home run. Reporter: Baseball legends and icons to many. But for Yankee fan James miccioni, known to his family and fans as uncle Jimmy, his passion for the game extended for decades as a baseball card and memorabilia collector. He loved the Yankees of the '30s to the 2000s. Reporter: The World War II vet and retired janitor from boonton, New Jersey, sharing his love of the game with his nieces and nephews. As children, Jeannie and Peter miccioni remember walking down to their uncle's basement in awe of his growing collection. I used to think, like, this is so amazing. It was almost like a museum. When you walked down there, it was baseball cards everywhere. Reporter: But it wasn't until this year when uncle Jimmy passed away at 97 years old, that the family had any idea what exactly was in their uncle's attic. He told us that in the attic is where the holy grail was. It was just amazing to open and then we'd find binders, 100 cards, all signed. Reporter: They uncovered a treasure trove. Nine decades worth of sports collectables and cards that no one knew existed, taking the sports industry by storm. Among them, six 1933 gaudy baseball cards, all signed by the great bambino himself. A 1949 Jackie Robinson rookie card in near perfect condition, and a 1969 Reggie Jackson rookie card. The estimated value -- enormous, said to be in the millions. The family says for uncle Jimmy, it was never about the money, but simply the love of the game. He retained part of history for the game of baseball, and I think that's very proud.
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