Alan "Mr. Mint" Rosen (c. 1943 – January 24, 2013) was an American sports collectibles dealer who was especially active in the 1980s and 1990s. He advertised heavily and was a fixture at card conventions. Eventually organizers would give him a table or booth in a prime location for free because they knew he would boost attendance. In a July 4, 1988, ''Sports Illustrated'' article, Dan Geringer called him the "King of Cards" in the "high-stakes baseball card game". In 1986, he was offered and purchased the "1952 Topps Find" of baseball cards, considered one of the greatest finds ever in the hobby. He also sold nine T206 Honus Wagner baseball cards over the course of his career.
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