Olivetti Logos 41PD (1977)
This is a successful calculator from Olivetti, the Logos 41PD. It was from the series of calculator Olivetti 40s, introduced in 1977 by Olivetti.
It has a 12 digit display, and a printer, with ten-pin, parallel-impact printer capable of printing 20 characters per line.
It was a professional calculator professional intended for office use.
As usual, to design it, Olivetti used many famous designers, in this case Mario Bellini, Antonio Macchi Cassia, Giovanni Pasini, and Sandro Pasqui.
I remember when I sold spare parts I sold a lot of these, for this calculator. In the printer there were gears, a motor, electronic parts, and other. It shared the same printer with all the calculators Olivetti of that times. There were millions all around!