Figure 4  Mugs, London, 1700–1720. H. 4 7/8" and H. 5 3/8". The mug on the left is attributed to John Dwight’s Fulham pottery and dates ca. 1703. It has an applied Britannia medallion and an “AR” excise mark below handle. For similar examples and further reading, see Chris Green, John Dwight’s Fulham Pottery Excavations 1971–1979 (London: English Heritage, 1999), pp. 134–35 example A, and for the medallion, see p. 269. The mug on the right is ca. 1720 and has the impressed excise mark “WR.” These excise marks were required by a British Act to ensure standardization of capacities in the tavern trade of beer and ale. As the Act originated in 1700 during the reign of King William, the WR excise mark was typically used throughout the eighteenth century.