A PAIR OF BOHEMIAN COBALT-BLUE GLASS GOBLETS AND COVERS, CIRCA 1920, possibly Gebrüder Lorenz, Steinschönau, each faceted bowl gilt with an interior scene depicting a music lesson, one with the instructor at the keyboard while his student listens, the other with the maiden performing while the instructor keeps time, gilt swags below, the knopped decagonal cover and foot gilt with ribbon tied floral wreaths