T201's, also known as Mecca Double Folders, were a type of tobacco trading card. They were issued in 1911 by the Mecca cigarette company, and featured color drawings of professional baseball players. The ‘T201’ designation comes from the American Card Catalogue, an authoritative guide to trading cards issued prior to 1951. The set features a total of 50 cards measuring 2-3/16 inches x 4-3/4 inches. The 100 players pictured include a number of Hall of Famers, such as Ty Cobb, Christy Mathewson, and Tris Speaker.