PT boat on original card. Card back says: Manufactured by Country Wide Adv. Corp., 289 Third Ave., New York, 10, N.Y. and has the union label. Card front says: Kennedy For President. The pin is marked JK60. The PT boat pin itself is based on the 1941 "sweetheart" pins that were given by crew members of the PT boats to loved ones. From my research I think that this was the first pin produced for the 1960 campaign and was handed out by the candidate or his staff...