



Lot 35
U.S. ARMY M-94 JEFFERSON-STYLE CIPHER MACHINE
3 – 4 November 2021, 13:00 PDT
Los AngelesSold for US$5,100 inc. premium
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U.S. ARMY M-94 JEFFERSON-STYLE CIPHER MACHINE
25 letter wheels, aluminum, 117mm long, 37mm diameter. stamped on side: "Cipher Device / M-94 / Signal Corps / U.S. Army"
The M-94, based on a system invented by Thomas Jefferson, then improved by French military cryptanalyst Etienne Bazeries (Bazeries Cylinder) was developed by Major Joseph Mauborgne in 1917. It was in use until 1942 when more complex machines like the Hagelin-designed 6-wheel M-209 replaced it.
The M-94, based on a system invented by Thomas Jefferson, then improved by French military cryptanalyst Etienne Bazeries (Bazeries Cylinder) was developed by Major Joseph Mauborgne in 1917. It was in use until 1942 when more complex machines like the Hagelin-designed 6-wheel M-209 replaced it.