Free Shipping to all UK customers for orders over £25.00
Free Shipping to all UK customers for orders over £25.00
Free Shipping to all UK customers for orders over £25.00
Usually dispatched within 3 - 5 business days.
£ 4.94
Cipher and decipher codes: transposition and polyalphabetical ciphers, famous codes, typewriter and telephone codes, codes that use playing cards, knots, and swizzle sticks . . . even invisible writing and sending messages through space. 45 diagrams.