281717 Isis Adventure Puzzle Ball

Isis Adventure Puzzle Ball
When your cerebral cortexes need stretching: use this. Said to be the most difficult puzzle ever, the ISIS is an alloy ball covered in a unique hieroglyphic code. The key inside it opens one of several ISIS golden pyramids hidden throughout the UK. Each pyramid contains a gold coin worth £500 and silver coins worth £20 each.

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ISIS Adventure Puzzle Ball