BNPS.co.uk (01202 558833)<br /> Pic: TomWren/BNPS<br /> <br /> Brian Biddle with his metal detector.<br /> <br /> A metal detectorist is celebrating today after a gold coin he unearthed in a farmer's field sold for more than &pound;50,000.<br /> <br /> Brian Biddle, 64, thought he had dug up an old bottle top before he swept off the mud to find it was an incredibly rare Angel coin struck during the reign of King Edward V in 1483.<br /> <br /> The relic had lain undisturbed in the field in Puddletown, Dorset, for more than 500 years until members of the Stour Valley Search and Recovery Club turned up.