Rare Zark Pottery arts and crafts vase covered in mottled blue glaze. EXCELLENT CONDITION. There is a small nick to the base edge. No other chips, cracks, damage or repair of any kind. Bottom marked with ZARK. Vase is 4 1/4" tall and 3" wide. Zark Pottery was produced by the Ozark Pottery Company in St. Louis, starting around 1907 and production ceased around 1910.