![Mid 19th century Thomas De Colmar Arithmometer (adding machine/first digital mechanical calculator) brass mechanism in a mahogany case. Mid 19th century Thomas De Colmar Arithmometer (adding machine/first digital mechanical calculator) brass mechanism in a mahogany case.](https://image.invaluable.com/housePhotos/Pragma/27/678527/H21836-L217610844.jpg)
Mid 19th century Thomas De Colmar Arithmometer (adding machine/first digital mechanical calculator) brass mechanism in a mahogany case.
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A THOMAS DE COLMAR ARITHMOMETER, FRENCH, CA 1880-1900 | History of Science and Technology, Including Fossils, Minerals and Meteorites | Books & Manuscripts | Sotheby's
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Vintage Original Manual Calculator, Feliks M ,mechanical Calculator, Arithmometer, Adding Machine, Steampunk, Office Decor, Industrial Decor - Etsy
![A THOMAS DE COLMAR ARITHMOMETER, FRENCH, CA 1880-1900 | History of Science and Technology, Including Fossils, Minerals and Meteorites | Books & Manuscripts | Sotheby's A THOMAS DE COLMAR ARITHMOMETER, FRENCH, CA 1880-1900 | History of Science and Technology, Including Fossils, Minerals and Meteorites | Books & Manuscripts | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/ab4cb8d/2147483647/strip/true/crop/2000x760+0+0/resize/385x146!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2Fb8%2Ff4%2F762b173f4f168a298a171f9d29fb%2F026n10172-bf9p9.jpg)
A THOMAS DE COLMAR ARITHMOMETER, FRENCH, CA 1880-1900 | History of Science and Technology, Including Fossils, Minerals and Meteorites | Books & Manuscripts | Sotheby's
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Vintage Original Manual Calculator, Feliks M ,mechanical Calculator, Arithmometer, Adding Machine, Steampunk, Office Decor, Industrial Decor - Etsy
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