http://www.thehistoryblog.com/archives/56154 An exceptional gold solidus of Emperor Constantine I, the first of its type ever discovered in Britain, will be sold at auction by the finder and landowner. It was discovered by a metal detector hobbyist in June of this year in Wanstrow, Somerset. June 7th was the first time he’d searched that field near an old Roman road. Wielding a second-hand metal detector, he first found a Roman brooch and some pieces of lead ore (the Roman road was used to transport lead from nearby mines). Then, a foot under the surface, he found a single gold coin.