Score the ham.
Combine mustard and allspice; rub over ham.
Place on a rack in a shallow baking pan.
Bake, uncovered, at 325° for 2 to 2-1/2 hours or until a meat thermometer reads 140°.
Spread top of ham with marmalade during the last hour of baking.
Garnish with kumquats and kale if desired.