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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...
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5 Calculating Aids...
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Calculating Toys and Curiosities...
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Toy Calculating Machines...
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Calculating Aids and Toys...
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Archimedes Educational Tool for Fractions, c....
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Calculateur Automatique Eureka Toy, c. 1900...
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The Little Accountant, c. 1895...
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Group of Arithmetic Games...
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Finger Calculator, c. 1920...
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Astronom Fraction Calculator, c. 1930...
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Group of Arithmetic Games...
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9 Arithmetic Games...
