The initials I.C. are almost certainly those of Johannes Camphuys (1634-1695), who was born in Haarlem and joined the Dutch East India Company at the age of twenty. After occupying a number of minor positions, he was placed in charge of the Company's operations in Deshima in 1671. In 1684, he was elected Governor-General of the Dutch East Indies and was stationed in Batavia. See Soame Jenyns, Japanese Porcelain, pls 10 1/b; Martine Lener, Catalgoue of Blue and White, Early Japanese Export Ware, pls. 44/45; and M. Lerner, Tea Ceremony Pottery and Export Porcelain, p. 278.