A GERMAN JEWELLED VARI-COLOUR GOLD-MOUNTED HARDSTONE SNUFF-BOX THE BOX, MAKER'S MARK CROWNED - C O, HANAU, CIRCA 1780, WITH TWO FRENCH IMPORT MARKS AND MARKS RESEMBLING THE PARISIAN SECOND CHARGE AND DECHARGE MARKS OF HENRY CLAVEL, THE DECORATION ON THE EXTERIOR OF THE BOX CIRCA 1860 oval honey-coloured agate box with vari-colour foliate gold mounts, later applied with coloured gold, silver and mother of-pearl forming architectural features, bridges, trees and waterfalls set with diamonds and coloured stones, applied silver-mounted diamond and emerald-set thumbpiece 3 1/8 in. (90 mm.) wide