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Thomas de Colmar Arithmom 232 tre, c. 1863
作品估价:EUR 1,800
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成交状态:未知
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25%
图录号:
2
拍品名称:
Thomas de Colmar Arithmom 232 tre, c. 1863
拍品描述:
No. 511, small model of Thomas de Colmar's 1820 calculator, designed, patented and manufactured by Charles Xavier Thomas of Colmar, later 44 rue de Chateaudun, Paris, with 5 input sliders, 10-digit results mechanism, early version without digit revolution counter, brass mechanism sticks, in mahogany case, 15 x 6½ x 3½ in. – A true milestone in the history of calculating machines.
condition: (3+/4)
condition: (3+/4)