1950s Painted wood, brass, fabric. Each: 78 x 99.5 x 94 cm (30 3/4 x 39 1/8 x 37 in.) Manufactured by I.S.A., Bergamo, Italy. Underside of one with manufacturer's metal label IMBOTTITURA BREVETTATA I.S.A/MOLLEGGIO SPIRAL SPRING/Gomma Cellulare 'CIGNO'/MODELLO DEPOSITATO.