A clay vessel containing around 300 coins was found at The Ridgeway Primary School as archaeological experts began initial surveys ahead of the school’s planned expansion works.

Specialists have been brought in to clean the findings, formally date them and, hopefully, establish their denomination.

It is believed the hoard may have been buried by a farmer or citizen of a Roman era settlement on the site for safe-keeping.

Cllr Paul Gittings, lead member for culture, sport and consumer services, said: “This is such an exciting find, especially as this 'buried treasure’ was found in the grounds of a Reading primary school.

“What a wonderful way to bring history to life for The Ridgeway’s pupils. I am sure that they are as keen as I am to find out more about the coins once they have been assessed by experts.

“Subject to the outcome of the Treasure Act process, the council hopes to exhibit the coins at Reading Museum so that they can be enjoyed by residents and visitors to the borough.”

Initial investigations suggest the existence of a small Roman hamlet or farm on the school site. There is also evidence of Late Bronze Age activity before that, in around 1,000 to 800 BC.

Madeleine Cosgrove, head teacher, said: “Both pupils and staff are very excited about this discovery and look forward to the story unfolding so that it can be preserved as part of the heritage of The Ridgeway School.”

As the landowner, Reading Borough Council technically owns the artefacts and will be able to decide what to do with them, subject to legal proceedings through the Treasure Act 1996.

The council hopes to be able to preserve the collection and put it on display at Reading Museum to chronicle another chapter in the history of the town.