The M209 machine was used by U.S. military during WWII and the Korean and Vietnam wars, with about 140,000 of the devices being built. The machine was made after the U.S. rejected the earlier C36 cipher machine used by the French as being too weak.
Nick Heath of Silicon.com reported from London.
August 18, 2009 11:50 AM PDT
Photo by: Bletchley Park
| Caption by: Nick Heath
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