A rare and pristine example of gladiator memorabilia found in the River Tyne is to go on display, shining light on a 2,000-year-old culture of celebrity and sex appeal.

English Heritage said the copper alloy figurine would have been a decorative handle on a folding knife. Found near Corbridge, Northumberland, it provides proof that the superstar status of gladiators extended to the far edges of the Roman empire.

“It is amazing, it’s absolutely pristine,” said Frances McIntosh, English Heritage’s collections curator for Hadrian’s Wall. It is rare to find any example of gladiator memorabilia in Britain but “to find such a well-preserved and interesting piece is remarkable”.

“This beautifully made knife handle is a testament to how pervasive this celebrity culture was, reaching all the way to Hadrian’s Wall at the very edge of the Roman empire.”

McIntosh said successful gladiators became celebrities and had sex appeal. “There are lots of rumours that you see of high society women falling in love with gladiators,” she said. “Often a slur on somebody was that they had been fathered by a gladiator, that they were the son of a gladiator because their mother was … you know.”