![Olivetti Logos 55 Electronic Desktop Calculator, 1974 - May 18, 2019 | Auction Team Breker in Germany Olivetti Logos 55 Electronic Desktop Calculator, 1974 - May 18, 2019 | Auction Team Breker in Germany](https://p1.liveauctioneers.com/364/140486/71303313_1_x.jpg?quality=80&version=1556016097)
Olivetti Logos 55 Electronic Desktop Calculator, 1974 - May 18, 2019 | Auction Team Breker in Germany
Modem Times on Twitter: "The 1949 Olivetti Summa 15 manual calculator. This version has two additional digit keys (10 and 11) to allow it to calculate pre-decimal British currency - 12 pennies
![585: OLIVETTI, Logos calculators, collection of three < Mass Modern - Day 2, 10 August 2018 < Auctions | Wright: Auctions of Art and Design 585: OLIVETTI, Logos calculators, collection of three < Mass Modern - Day 2, 10 August 2018 < Auctions | Wright: Auctions of Art and Design](https://www.wright20.com/items/index/2000/585_1_mass_modern_day_2_august_2018_olivetti_logos_calculators_collection_of_three__wright_auction.jpg?t=1537973987)