The Curta Type I was manufactured from 1949 until early 1972, when handheld electronic calculators replaced it. Compare to 1981.0922.01. Reference: Curt Hertstark, Interview with Erwin Tomash, ...

He worked on the design during World War II as a prisoner at the Nazi concentration camp of Buchenwald, and produced the machine after the war in Liechtenstein. The Curta Type II was sold from at ...