A CINNABAR-RED OVERLAY TURQUOISE-BLUE GLASS 'CRABS' SNUFF BOTTLE, QING DYNASTYCarved and neatly incised overlay glass. China, late 18th- 19th centuryDelicately carved through the cinnabar-red overlay to the opaque turquoise ground with two crabs amidst lotus plants, the base formed as a lotus leaf.T