A LOUIS XVI DOUBLE-OPENING ENAMELLED VARI-COLOUR GOLD BO?TE-à-MOUCHES BY CHARLES LE BASTIER (FL. 1754-1783), MARKED, PARIS, 1776/1777, STAMPED 870, WITH THE CHARGE AND DECHARGE MARKS OF JEAN-BAPTISTE FOUACHE 1774-1780 rectangular box, the cover, sides and hinged base set with panels of translucent gold enamel painted with brown winter branches en cama?eu on an engine-turned ground, with translucent red berry enamel and foliate sablé borders and white enamel frames, the cover set with a mirror, the interior fitted with an oblong similarly enamelled hinged compartment and a gold-handled brush, the hinged base with a shallow compartment for patches and set with a mirror 2 in. (50 mm.) wide