21 Beverage glassware; Coffee cups; Cups; Enamelled glass, not for building; Glass carafes; Glass, unworked or semi-worked, except building glass; Mosaics of glass, not for building; Opaline glass; Ornaments of crystal; Perfume burners; Works of art of crystal, ceramic, earthenware, glass, porcelain, terra cotta; Tempered glass, not for building