JONES, Mark. The Art of the Medal. London, 1979. 192 pages. Lavishly illustrated with several color plates.  7.75" x 10". Hardbound with a dust jacket. New. Reduced from $40. Now $30                                                                            An outstanding work that traces the history of the medal as an art form. This is a work that should be in the library of every serious connoisseur of medallic art.