Colored, curved and beveled glass framing mirrored glass encased in brass trim.
Each dated on the back 1963 and 1965.
Quaderni Fontana Arte 2, 1962
Domus, no. 424, March 1965
Franco Deboni, Fontana Arte: Gio Ponti, Pietro Chiesa, Max Ingrand, Turin, 2012, fig. 419