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.