21 Topps Bowman Platinum Baseball Mega Box Trading Cards

21 Topps Bowman Platinum Baseball Mega Box Trading Cards. The Topps Company . Inc. is an American company that manufactures chewing gum . candy . and collectibles. Based in New York City . Topps is best known as a leading producer of American football . baseball . basketball . ice hockey . soccer . and other sports and non-sports themed trading cards. It is currently the only baseball card manufacturer with a contract with Major League Baseball.