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MastroNet, Inc. of Willowbrook, IL, is the leading high value collectibles auction company. The company has sold many of the most famous and valuable sports and Americana collectibles ever offered to the public, including the most expensive baseball card in history, the T206 Honus Wagner which sold for $1.265 million, Norman Rockwell's "The Dugout," the bus Rosa Parks rode on when she refused to stand for segregation and the famous Cubs foul ball for over $100,000.