This stunning rotating astrolabe is a gorgeous kinetic sculpture. The rare celestial orbit piece was crafted in Italy circa 1970. The six circles are made of Acrylic Lucite in a smoke gray color and stand on a frosted clear base. The six concentric circles that constitute this atomic astrolabe pivot on a different axis from the previous circle, thus creating thousands of possible combinations for a surprisingly and constantly different design. There is no visible maker's mark.