A rare, complete set of 30 glass counters for a Roman board game has been set out again, more than 50 years since they were excavated and almost 1,700 years since they went into the tomb with their twentysomething owner.

His skeleton, still in its handsome scallop shell decorated lead coffin, is now surrounded again by the refreshment provided for his journey to the next world - flagons, bottles, spoons and bowls, and the 30 counters, probably for the gambling game duodecim scripta, laid on top of his coffin - as well as hundreds of other objects excavated a lifetime ago but now going on show.

The ruins of Lullingstone Roman villa in Kent have been on display since the 1960s. But the leaking structure used to cover it was not safe for the more fragile objects, which remained in store. A £1.8m English Heritage display, opening today, will show off the ruins with an elaborate light show, and for the first time reunite the villa and its contents.

The death of the gambler is still a mystery. He and a woman of a similar age were the only burials found in a mausoleum built behind the opulent villa around 320AD.

Robbers found and destroyed her coffin centuries ago. But his skeleton and fragments of hers survive to show they were in their 20s, above average height - he was 5ft 10in, she 5ft 6in - with no obvious cause of death.

The counters were found with carved bone pieces, including a Medusa head. "Whether they were for his entertainment or because they were his treasured possession, we can't know - but they must be intimately connected with him, they were so deliberately placed on his coffin," curator Jo Gray said.

The villa is famous for fourth-century wall paintings - reconstructed from thousands of plaster fragments and now in the British Museum in London - which are proof of some of the earliest Christian worship in Britain.

The villa was discovered in 1939, on the eve of the second world war, when a tree blew down revealing scattered mosaic fragments.