Combine syrup, vinegar and mustard. Place ham, fat side up, on rack in shallow roasting pan.  Pour about 1/2 cup mixture over ham and  bake, uncovered, in a preheated 325 degree oven for 1-1/2 hours.  Baste every 30 minutes with additional sauce. Remove ham from oven  and score fat into diamond shapes. Insert a clove into each diamond.  Bake ham an additional 30 minutes or until a meat thermometer  inserted into the thickest part of meat registers 140 degrees. Let ham rest 15 minutes before carving. Makes 10 to 12 servings.