Remove the layer of skin from ham, leaving a thin layer of fat to keep the meat juicy while baking. Score the surface of the ham in a diamond pattern, without cutting into the meat. Place a whole clove in the center of half the diamonds. Place ham in roasting pan and brush top with mustard. Combine sugar, honey and cinnamon; heat over medium temperature, about 2 minutes until mixture will pour, but not thin. Spread over ham. Pour apple juice in bottom of roasting and bake at 160ºC or 1.5 hours. Baste every half hour using juices in the pan.