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Title
Old mechanical calculator, Brunsviga brand #211185119
Description
Black and white photograph of an old reel calculating machine, Brusviga model 13Z. Made in Germany in the 1940s. It could perform all four basic operations with one hundred percent reliable results. It was used in the finance department of the now defunct Lota coal mine, in the province of Concepción. Currently this piece is in the coal museum in the city of Lota, Chile.
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