A ten key portable machine. The first models were put on the market in 1914 and in September, 1923, the direct subtracting model was announced. All models have the keyboard arranged in three rows of three keys each, with a bar or cipher key below; control keys are arranged along either side of the amount keys. A backspace key allows the user to remove entry errors.
This elegant design pictured here was most likely produced in 1920, and was sold for approximately $300.