President Kennedy JFK Half Dollar Mini Bar Lot - Vintage. This lot includes a two mini bars made from 0.999 fine silver, featuring a President Kennedy JFK half dollar design, and a Carson City mini bar. The shape of the bar is rectangular, and it was made in the United States. It is a great addition to any collection of silver bullion or coins and paper money. The composition of the bar is silver, and it is a vintage piece that is sure to be cherished by any collector. Three total mini bars.