Bonhams are selling what is believed to be the oldest-known cricket artefact outside the British Isles in its sporting memorabilia sale on May 30 in Chester.

A belt buckle featuring an Afro-European slave playing cricket in Barbados circa 1780 has attracted a pre-sale estimate of £100,000.

It was discovered by Clive Williams, a retired advertising consultant from London, with a metal detector that had been given to him by his wife while on holiday near the River Tweed in the Scottosh borders in 1979.

He cleaned it to discover the figure of a mixed-race slave playing cricket, holding a cricket bat and in the act of being bowled.