Curta Calculator c1955



A type II Curta calculator, complete with its original metal canister case. The calculator has 11 digits for data entry, an 8digit revolution counter, and a 15digit result counter. Type II Curta calculators started production in 1954 with serial number 500,000 so this is an early example made circa 1955. The calculator is in good working order and in very good condition. The Curta, a small handcranked mechanical calculator, was designed by Curt Herzstark and first introduced in 1948, the larger type II version was introduced in 1954. The calculator has an extremely compact design and can be used to perform addition, subtraction, multiplication, division, and —with more difficulty— square roots and other mathematical operations. The calculator is sold with a recent reprint of the Curta instruction manual. For more details of the Curta calculator and its history see www.vcalc.net and www.curta.org 
This shows the top of the calculator.  
The underside of the Curta is marked System Curt Herzstark Made in Liechtenstein by Contina Ltd Mauren No. 500261. 

THIS ITEM HAS BEEN SOLD Stock No. C1113 