The Victor model 700, probably from the 1940s. The case is solid bakelite! This machine, with some variation on the outer case, is sometimes called the Victor Champion, or Victor Tallymaster.

Otto Sundstrand's real name was Oscar.

This is episode 38 of my video series about calculating devices.

End song inspired by "Hotter Than a Molotov" by The Coup.

Chris Staecker webarea: https://faculty.fairfield.edu/cstaecker