For scholars of faith and history, it is a treasure trove too precious for price.
This ancient collection of 70 tiny books, their lead pages bound with wire, could unlock some of the secrets of the earliest days of Christianity.
Academics are divided as to their authenticity but say that if verified, they could prove as pivotal as the discovery of the Dead Sea Scrolls in 1947.
On pages not much bigger than a credit card, are images, symbols and words that appear to refer to the Messiah and, possibly even, to the Crucifixion and Resurrection.
Adding to the intrigue, many of the books are sealed, prompting academics to speculate they are actually the lost collection of codices mentioned in the Bible’s Book Of Revelation.
The books were discovered five years ago in a cave in a remote part of Jordan to which Christian refugees are known to have fled after the fall of Jerusalem in 70AD. Important documents from the same period have previously been found there.
Initial metallurgical tests indicate that some of the books could date from the first century AD.
This estimate is based on the form of corrosion which has taken place, which experts believe would be impossible to achieve artificially.
If the dating is verified, the books would be among the earliest Christian documents, predating the writings of St Paul.
The prospect that they could contain contemporary accounts of the final years of Jesus’s life has excited scholars – although their enthusiasm is tempered by the fact that experts have previously been fooled by sophisticated fakes.
David Elkington, a British scholar of ancient religious history and archeology, and one of the few to have examined the books, says they could be ‘the major discovery of Christian history’.
‘It is a breathtaking thought that we have held these objects that might have been held by the early saints of the Church,’ he said.
But the mysteries between their ancient pages are not the books’ only riddle. Today, their whereabouts are also something of a mystery. After their discovery by a Jordanian Bedouin, the hoard was subsequently acquired by an Israeli Bedouin, who is said to have illegally smuggled them across the border into Israel, where they remain.
However, the Jordanian Government is now working at the highest levels to repatriate and safeguard the collection. Philip Davies, emeritus professor of biblical studies at Sheffield University, said there was powerful evidence that the books have a Christian origin in plates cast into a picture map of the holy city of Jerusalem.