![File:Divisumma 18 calculator, designed by Mario Bellini & A. De Gregori, Olivetti & Co., Milan, 1973, plastic case - Museum für Angewandte Kunst Köln - Cologne, Germany - DSC09676.jpg - Wikimedia Commons File:Divisumma 18 calculator, designed by Mario Bellini & A. De Gregori, Olivetti & Co., Milan, 1973, plastic case - Museum für Angewandte Kunst Köln - Cologne, Germany - DSC09676.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/3/33/Divisumma_18_calculator%2C_designed_by_Mario_Bellini_%26_A._De_Gregori%2C_Olivetti_%26_Co.%2C_Milan%2C_1973%2C_plastic_case_-_Museum_f%C3%BCr_Angewandte_Kunst_K%C3%B6ln_-_Cologne%2C_Germany_-_DSC09676.jpg)
File:Divisumma 18 calculator, designed by Mario Bellini & A. De Gregori, Olivetti & Co., Milan, 1973, plastic case - Museum für Angewandte Kunst Köln - Cologne, Germany - DSC09676.jpg - Wikimedia Commons
Sold Price: An Italian Divisumma 18 calculator, Mario Bellini for Olivetti, 1973 - April 4, 0119 11:00 AM CEST
![File:Mario bellini per olivetti & c. spa., macchina da scrivere lexikon 82, 1973.jpg - Wikimedia Commons File:Mario bellini per olivetti & c. spa., macchina da scrivere lexikon 82, 1973.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/4/4a/Mario_bellini_per_olivetti_%26_c._spa.%2C_macchina_da_scrivere_lexikon_82%2C_1973.jpg)