The Shrewsbury Hoard in its pot, Portable Antiquities Scheme, Wikimedia Commons, CC BY 2.0.
In August 2009 Nic Davies, who had taken up metal detecting a month earlier, was sheltering from rain near Shrewsbury when he found a Roman pot packed with 9,315 coins of the age of Constantine. He had not asked the landowner's permission, and the coroner said so.
In August 2009, Nic Davies, who had taken up metal detecting only about a month earlier, was sheltering from the rain beside a bridleway in a plantation near Shrewsbury when he switched his machine on. After a few shotgun cartridges, he found the top of a pot full of coins, which he described as running off his fingers. It was his first real find.
He dug the pot out himself, though without disturbing the coins inside, and took it to Peter Reavill, the Finds Liaison Officer for Herefordshire and Shropshire, who carried out a small excavation of the pit with Shropshire Council's archaeologists. The pot was a large, thin-walled storage jar of Severn Valley ware, set in a pit and capped with a flat stone. With its contents it weighed about 32 kilograms.
Inside were 9,315 copper-alloy coins: 9,297 small nummi struck between AD 313 and 335, some of them washed with silver, and 18 older coins of the late 3rd century. About 300 more were scattered around the pit. The coins lay in layers, the oldest at the bottom, from about AD 320, and the newest at the top, from 333 to 335, which shows that their owner added to the store over a number of years. Scraps of the cloth bags they had been kept in survived, along with an iron nail. Many of the coins were struck to celebrate the anniversaries of Rome and of the new capital, Constantinople. For all its size, the hoard was worth less than a year's pay for a legionary.
The coins were cleaned and studied at the British Museum. At the inquest in October 2011, the coroner declared them Treasure, praising Mr Davies for not disturbing them but criticising him for detecting without the landowner's permission, which he had not known he needed. Shropshire Council's museum service acquired the hoard with the help of several grants, and it went on display in the Roman gallery of Shrewsbury Museum and Art Gallery when the museum reopened in 2014.
Written for Global Finds from Shropshire Council (2013), BBC News (2011) and the Portable Antiquities Scheme. Photo: the Shrewsbury Hoard in its pot, Portable Antiquities Scheme, Wikimedia Commons, CC BY 2.0.
Those four are for England and Wales, where the Portable Antiquities Scheme records finds and the Treasure Act decides what must be reported.
Scotland runs its own system, and every find is reportable there — not only treasure. Treasure Trove Unit ›
The Republic of Ireland is different again, and severely so. Searching for archaeological objects without the Minister’s written consent is a criminal offence carrying fines or imprisonment, and the definition is broad enough to cover coins, buttons and buckles of almost any age. Do not assume British rules travel with you. The law, from the National Museum ›
Northern Ireland is stricter still. The Treasure Act applies and finds go to National Museums NI within fourteen days, but any searching that involves digging — metal detecting expressly included — needs a licence, and licences are only granted for archaeological projects. National Museums NI ›
This site covers discoveries from all over the world, and so does the variation in the law — from a recording scheme that thanks you, to a criminal offence. Wherever you are searching, find out what applies there before you go, not after.