[GreenKeys] Interesting cipher machine.

[Jerry Murphy]

     Correction ---
I stated that Teletype Corporation manufactured most if not all of the mechanical crypto
machines used by the United States.  Not so.  Smith Corona manufactured all of the M-209
crypto devices.  The M-209 - also known as the Hagelin device - was a small, tactical crypto
device for use in the field.  A picture of one is attached.

 
The interesting thing in that video is that the keyboard and strip printer is a repackaged
Model 31 Teletype machine.  By the way, Teletype Corporation manufactured most if not
all of the mechanical crypto machines used by the United States.  Attached is a picture
showing a SIGABA machine on the left and the AFSAM-4 machine on the right.
Jerry Murphy
h (https://www.youtube.com/playlist?list=PLWvkfYC3snpX8ITLHEpgxi7l7yw8cXXGC)

 
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