Grandmother's Prayer Arnold Hartig (born August 12, 1878, in Tannwald; died February 2, 1972, in Purkersdorf) was an Austrian sculptor and medalist of Bohemian origin who was active in Vienna for sixty years. He created approximately 600 works over the course of his career. Dimensions: 12 x 17 cm; thickness: 1 cm; weight: approx. 580 g Material: Cold-cast ceramic; surface finished with high-temperature mineral-based coloring.