The Witham Shield in the British Museum, Bob Harvey, geograph.org.uk via Wikimedia Commons, CC BY-SA 2.0.
Dredged from the River Witham near Lincoln in 1826, this long bronze shield facing is a masterpiece of early Celtic art. A leather boar once fixed to it has vanished, leaving only its outline.
In 1826, while the River Witham was being dredged near Lincoln, probably between Stamp End and Washingborough, workmen brought up the bronze facing of an Iron Age shield. Nobody recorded the finder's name or the exact day.
The facing is about 1.1 metres long, made from two sheets of bronze only a fraction of a millimetre thick, joined at the middle. The wooden shield it once covered has long since rotted away. At its centre is a raised boss set with red coral, probably brought from the Mediterranean, and its ends are decorated with roundels based on the heads of birds, with engraved birds and stylised animal heads. The British Museum dates it to about 400 to 300 BC, others suggest the 3rd century BC, and it may have been reworked during its life.
When it was found, the outline of a long-legged boar could be seen across the shield, and it was drawn in 1863. The boar, probably cut from leather, had been riveted on. Today it survives only as rivet holes and a faint shadow in the colour of the metal.
Like many fine Iron Age weapons from the Witham, the shield is thought to have been placed in the river as an offering. Nearby at Fiskerton, archaeologists have excavated an Iron Age causeway that produced swords, spears and other objects, evidence that this stretch of river was a sacred place.
The shield first went to the Rector of Washingborough, on whose land it was found, and then to the London armour collector Samuel Rush Meyrick. After his death it was sold, and in 1872 the collector Augustus Wollaston Franks gave it to the British Museum, where it is on display. A replica can be seen in Lincoln, and the original went back there on loan in 2013.
Written for Global Finds from Lincoln Museum, the Society for Lincolnshire History and Archaeology and other published accounts. Photo: the Witham Shield in the British Museum, Bob Harvey, geograph.org.uk via Wikimedia Commons, CC BY-SA 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.