Kit Karbler and Michael David (American, 20th century) signed and numbered 68847 contemporary blown art glass "U" form sculpture / paperweight . Original design achieved by their technique of layering, threading, cutting and polishing hand blown glass, distinguished by thin, concentric lines of colored glass in gem like hues immobilized in clear crystal. Signed to bottom. Measures 6" (15cm) height by 5 1/2" (13cm) width, total weight 1258g.