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This is a novelty cryptography coin, inspired by classic substitution ciphers and puzzle-hunt culture (Cicada 3301, escape rooms, ARGs, etc.). It is not a historical cipher device it's a modern collectible puzzle coin.
A beautifully detailed brass-finish challenge coin designed for puzzle lovers, escape-room fans, codebreakers, and collectors of unusual curiosities. Each side features a different cipher layout:
Vertical AZ alphabet
Interlinked linemapping system
Used to encode outgoing messages
Networkstyle AZ decoding grid
Designed to trace and interpret incoming messages
Perfect for puzzle hunts, ARGs, and cryptography enthusiasts
Solid metal coin with antique brass look
Diameter: 4cm
Weighty, premium feel
Includes transparent floating display frame (as shown in photos). Also has a protective capsule for storage
Great as a gift, desk piece, or collectors item
Ideal for fans of Cicada 3301, escape rooms, geocaching, and cipher puzzles
Encode simple substitution messages
Use as a prop for puzzle games
Add to a challengecoin collection
Display in the included frame
Use as a conversation starter or mystery gift
Visit The Polar Express page for more collectibles, divination and gifts: POLAR EXPRESS on bobshop.co.za
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