Italy, 1974/76
molded plastic, enameled steel, acrylic 5 h × 16½ w × 9½ d in (13 × 42 × 24 cm)
molded plastic, enameled steel, acrylic 5 h × 16½ w × 9½ d in (13 × 42 × 24 cm)
estimate: $500–700 
result: $63
Collection includes two Logos 55 calculators designed by Mario Bellini and one Logos 75B calculator. Signed with molded manufacturer’s mark to each example: [Olivetti Logos].