Tjipetir blocks
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Mystery of the washed up 'Tjipetir' tablets

7 January 2015 Last updated at 06:34 GMT

Over the past few years mystery rubber tablets engraved with 'Tjipetir' have been found washed up all around Europe.

The rubber-like blocks from Indonesia were first found in 2012 by a beachcomber in Newquay, Cornwall.

It's been a mystery to many but Jenny has found someone who knows more.