A SWISS OCTAGONAL GOLD AND ENAMEL SNUFF-BOX, the cover painted with Thalia, the Muse of comedy, with a scroll and instruments, holding a mask, flanked by panels of black enamelled bands and engraved flowers, the sides with similar decoration, the central enamel panel of the base painted with Roman figures, by François Joanin, Geneva, circa 1800, and with Austrian import marks