Scott Kerr on Twitter: "Olivetti Summa 19 calculator, designed between 1969 and 1970 by Ettore Sottsass and Hans von Klier https://t.co/tPRGFZlEF2" / Twitter
Olivetti Summa Prima 20 by Tuusa, via Flickr | Retro gadgets, Retro design, Vintage electronics
Ettore Sottsass, Hans Von Klier - Olivetti - Mechanical - Catawiki
Olivetti “Summa 19” Calculator – Future Forms
Olivetti Summa 19 designed by Ettore Sottsass in 1970
Scott Kerr on Twitter: "Olivetti Summa 19 calculator, designed between 1969 and 1970 by Ettore Sottsass and Hans von Klier https://t.co/tPRGFZlEF2" / Twitter
telmachine olivetti summa 19 01 1970 v klier h_sottsass e … | Flickr
ArtStation - Olivetti Summa Prima
Summa 19 Electronic Printing Calculator | Denver Art Museum