Original Odhner Calculator Model 27 in working order. Sweden, 40's

Vintage Original Odhner calculator or arithmometer, model 27; an original piece made in Sweden in the 1940s, in quite good condition. This machine works very well and can perform the four basic arithmetic operations. It is a very attractive article that preserves all its original component parts, gears and handles. The calculators design is compact and solid, typical of the vintage pinwheel arithmometers that would become so popular in the first decades of the 20th century. At the top of the machine we can see its market name: Original Odhner. Odhner is a very important name in the history of modern calculating machines. Willgodt T. Odhner was a Russian inventor that developed the pinwheel system that gives life to this kind of machines, based in the system invented by Leibniz. In 1874 he constructed his first pinwheel calculator, and in 1886 he opened a factory for large-scale manufacture. After the Russian Revolution, the factory was nationalized and Odhners legal successors fled to Sweden and founded the Aktiebolaget Original Odhner in Goteborg, the factory where the calculator we can see in these photos was manufactured. Odhner calculators were manufactured all over the world under different market names. This lovely machine is an Original Odhner Model M, an arithmometer produced from 1938 to 1950. The black-enameled metal case is in good condition and except for slight signs of the trace of time and use (logical, on the other hand, in such an old machine) is quite well preserved. The golden numbers are visible and keep their original golden paint, while the metal mobile component parts do not show any sign of rust. At the top of the calculators back we can see the engraved serial number: Nº 7-186302; just below there is a blue sticker with the name of the original distributor, Alfred H. W. Gosch. This Odhner pinwheel arithmometer is an original piece, worthy of a museum of technology or of a great collection of vintage calculators.