»Thomas' Arithmomètre«, c. 1870
Large model of Thomas de Colmar's calculator of 1820, marked: "Arithmomètre – no. 1396". Designed,
patented and manufactured by Thomas de Colmar, 44 rue de Chateaudun, Paris.
With 8, 9 and 16 digits, brass mechanism, in oak case,
size: 23 x 7 ½ x 4 ¾ in. (~ 58,5 x 19 x 12 cm)
A true milestone in history of calculating machines!
Estimate: € 2,500/4,000
US$ 3,200/5,200
Reserve: € 1,600/US$ 2,080
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