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Window Display Model of a Fountain Pen, c. 19...
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Electric Dictating Machine Parlograph with Ac...
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Velopost Letter Closing and Stamping Machine,...
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Hagelin Cryptos BC-543 Cypher Machine, c. 195...
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Hagelin Crypto CD-57 Cipher Machine, 1957...
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Monopol Calculating Machine, 1902 onwards...
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Curta Type I Calculator, 1964...
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Madas Superautomat IX eTA Tomina, 1927 onward...
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XxX ("X multiplied by X") Keyboard Calculatin...
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Arithmomètre Payen, c. 1888...
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Olivetti Programma 102, c. 1966...
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The Millionaire Calculating Machine, 1918...
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Curta Type I Calculator, 1962...
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2 Burroughs Calculating Machines...
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Rexkalkulator...
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2 Calculating Machines and 2 Posters...
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Calculating Machines and Calculating Aids...
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Mercedes Euklid Model 1 Proportional-Lever Ca...
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Curta Type I Calculator, 1968...
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Curta Type II Calculator (Light-Gray), 1964...
