WWII  - Signal Corps Cipher Card
wwii_sigcorps_card1.jpg wwii_sigcorps_card2.jpg
Photos via E-bay
This  WWII era cipher card is printed on heavy, laminated card stock. There is an outer ring of of stationary letters and  a second inner ring which spins. Directions for use are at the bottom of the card.

Dimensions: Approximately3 by 5 inches.

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Nov 2/08