Object consists of adding machine and power cord. Sticker from City Office Equipment Co. on front of casing.
Olivetti engineer Natale Capellaro and industrial designer Marcello Nizzoli created a number of the company's calculators. The Divisumma models offered automatic calculation with all four basic operations; the Divisumma 14 was an early example of a printing calculator with automatic division. The later Divisumma 24 was a great commercial success for Olivetti.