A Dutch 18K gold, enamel and micromosaic snuff box

rectangular-shaped and representing "View on the Piazza San Pietro with staffage", French importation and guarantee marks (1809 - 1819). Bibliography: cf. Roman Mosaic - L'arte del micromosaico tra '700 e '800, R. Grieco - A. Gambino; I Mosaici Minuti Romani, D. Petochi, M. Alfieri, M. G. Branchetti; Argentieri gemmari e orafi D'Italia, Costantino Bulgari, 1,9x8,1x5,5 cm.