Wheatstone Cryptograph

The Wheatstone Cryptograph was invented by Sir Charles Wheatstone around 1870. He introduced his latest invention at the 1867 Paris Exposition. The Cryptograph attracted considerable interest but flaws in its security were noted within a few years, and going by the few survivors, it was probably not a commercial success. The small stylus in this example is missing. The face of the device is signed "The Cryptograph". C. Wheatstone, Inv'r.
 
 

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Rear view of the device
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Velvet lined case.
All photos via E-bay 

Contributors and Credits:

1) ttps://www.ebay.com/itm/C-WHEATSTONE-CRYPTOGRAPH-ENGLISH-c-1870-CIPHER-EXTRE
MELY-RARE-ORIGINAL-CASE/192429022475?hash=item2ccda9dd0b:g:dU8AAOSwf15aXlxP

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Jan 22/18