Tray (part of a Coffee Service). Vienna State Porcelain Manufactory; Austrian, 1744-1864. Date: 1765-1775. Dimensions: H. 15.9 cm (6 1/4 in.); diam. 55.9 cm (22 in.). Hard-paste porcelain, monochrome black (Schwartzlot), polychrome enamels, and gildi