Lot Essay
This calculator is very similar to the Thomas T5 which was first made in 1875, however slightly later versions like this were made into the early 1920s
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Details
An Arithmometer
by Thomas de Colmar, Paris. No.1628, with Tate's Improvements patent stamp date Jan 1894, twelve digit windows on carry slide above seven carrier digits, flanked by reset controls and six input sliders with multiply/addition and subtraction/division control and folding crank, in mahogany case, circa 1900 -18¼in. (46.5cm) wide
by Thomas de Colmar, Paris. No.1628, with Tate's Improvements patent stamp date Jan 1894, twelve digit windows on carry slide above seven carrier digits, flanked by reset controls and six input sliders with multiply/addition and subtraction/division control and folding crank, in mahogany case, circa 1900 -18¼in. (46.5cm) wide
Sale room notice
This lot is subject to V.A.T. 5