“Old boy” indeed! To sell baseball cards, determine whether there is demand for the card by bringing it to a local card shop, or posting it on popular Web sites such ... If I had a dollar for every time I've heard th.e story about "Mom throwing away my baseball cards", I could retire tomorrow! This can be a very fulfilling business which little capital outlay is needed. He was and still is one of the most revered and popular players of the sport. Burdick (1900-1963) published, collected, organized, donated and researched, all in the field of collected cards. As you can imagine this would ruin the card. Nearly every year, baseball grew and Topps would increase the size of its sets, from 206 in 1955 to over 700 by 1970.