Experts have identified the object discovered by Rowan as a Roman armilla bracelet dating back 2,000 years. In the Roman Empire, bracelets were typically worn by women as an indication of their social status. Men generally did not wear bracelets due to their association with femininity. However, there were exceptions for soldiers with exceptional bravery or merit. A Roman general would publicly award these individuals armilla bracelets; the soldiers wore them as badges of honor.
More info here: https://www.ancientpages.com/2024/04/15/young-boy-rare-ancient-roman-treasure-sussex-uk/
Did he have to hand it over? If so that sucks. The UK makes you give up anything you find, yet private collections are filled with artifacts. Rules for the rich I guess.