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Kenbak-I Digital Computer, 1971...
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Hagelin Cryptos CX-52 Cypher Machine, 1952 on...
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Ciphering Machine Enigma (K-Model) with addit...
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Transvertex HC-9 Cypher Machine, c. 1955...
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National Mod. 442X Cash Register, 1911...
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6 Calculating Machines...
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6 Calculating Machines...
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6 Calculating Machines...
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4 Desk Calculators...
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7 Calculating Machines...
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Collection of 16 Fast Adding Machines...
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5 Calculating Machines...
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The Marbel Blood-Cell Calculator, 1922...
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French Calculating Drum ...
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Comptometer, c. 1935...
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Brunsviga 13 Z Twin Calculator, 1932...
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"Antares" Cutaway Model...
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6 Spokewheel Adding Machines...
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4 Calculators...
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4 Calculators...
