(4) items including 1-liter stoneware “Army Group Crown Prince Rupprecht” regimental stein; 1-liter stoneware stein depicting marching soldiers with words from the “Rutlischwur” oath and having pewter lid inscribed with a service anniversary of 01/02/1915, maker mark to underside; 1/2-liter stoneware stein having blue glaze and pewter lid bearing the date “1914”, also “2131” and “23” impressed to underside; and a pewter artillery shell-shaped stein having a raised iron cross emblem marked “1914”