We all know Commodore because of their contribution to the evolution of the computer (and who hasn’t had a C64 back in the eighties?).
Before their entry into the computer market (which did not even exist actually), Commodore used to produce on a large scale pocket and scientific calculators. It was the enduring “calculator wars” with Tandy that contributed to Commodore picking up and seeing the challenge of the new technologies that would make eventually make them the founders of the computer industry.
This particular model is an adding machine, typically used in accounting, and dates from the early seventies.