Sherlock Holmes Treasury Safe

The Case of the Treasury Safe. A coin, given in gratitude to Sherlock Holmes by the British Treasury must be kept safe. Mulling over a cold case Sherlock senses inspiration. Taking an old safe, he modifies it with a series of panels, notches, and tiles that, only when manipulated in a specific order, will allow the safe to open.

Professor Puzzle is a UK-based specialist puzzles and games manufacturer. They are renowned for expertly designed metal and wooden puzzles with a wide variety of brainteasers and games.