In 2014, after unearthing an unusual coin engraved with an Arabic inscription at a pick-your-own-fruit orchard in Middletown, Rhode Island, Bailey began retracing Every’s steps.

A Viking-era brooch made in the style of an Arabic coin has been found by a metal detectorist. The early medieval silver-plated Islamic replica dirham brooch was found at Watton, Norfolk. Coin ...