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French Ink-Writer Telegraph by Breguet, c. 18...
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Facsimile "Bélinographe", c. 1928...
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Bright's Bell Acoustic Telegraph Sounder, 185...
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NeXT Cube, 1988...
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Intel Computer, c. 1987...
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Computer Plug-in Module for the "Zuse Z 22" C...
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KIM-1 Computer, 1976 onwards...
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IBM XT 5160 Computer, 1983...
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IBM XT 5160 Computer, 1983...
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IBM XT 5160 Computer, 1983...
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Hewlett-Packard HP 110 Laptop Computer, 1984 ...
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Apple Macintosh Plus 1 MB Computer, 1986...
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Enigma Model K Ciphering Machine with Additio...
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Nema T-D Cipher Machine, 1946...
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M-130 (Korall) Russian Teletypewriter, c. 196...
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National Model 401-SH Cash Register, c. 1910...
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4 Small Calculating Toys...
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Mathematical Kits and Games...
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14 Teaching Arithmetic Devices, c. 1920-60...
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Collection of Calculating Aids and Toys, c. 1...
