Coffee cup, east London, England,
c. 1746. Bow high-magnesian (steatitic) porcelain. Height 5.8 cm. (Taylor collection.) This cup contains 6.3 wt% MgO and 8 wt% PbO which converts to 20 wt% talc (hydrous) and 21 wt% lead glass. A Bow attribution is based on the presence of the Island House pattern, the palette used, and the gilding over red-brown enamel.