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Very Early Swedish Telegraph, c. 1855...
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Cooke and Wheatstone Single-Needle Telegraph,...
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Hasler & Escher Morse Telegraph, c. 1880...
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Austrian Relief-Writer Telegraph by VTuTF, c....
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3 Small Demonstration Telegraphs, 1900 onward...
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Italian Ink-Writer Telegraph, c. 1900...
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Relief-Writer Telegraph, c. 1880...
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Austrian Relief-Writer Telegraph, c. 1880...
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Hagelin Cryptos BC-38 Cypher Machine, c. 1940...
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Hagelin C-446-A Cypher Machine, 1944 onwards...
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Amstrad PPC 512 Computer, 1988...
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Luxor ABC 80 Swedish Personal Computer, c. 19...
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Brunsviga Model D13 R-1 Twin Calculator, 1958...
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Austria Model I Arithmometer, c. 1906...
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Adding Machine for Large Numbers, c. 1900...
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Brass Stepped-Drum Calculating Machine ...
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Arithmometer - Original Odhner (Russian), c. ...
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4 Spoked Wheel Calculating Machines...
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Saxonia Universal Calculating Machine, c. 192...
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Certa Adding Machine, c. 1908...
