Iron Age and classical hoards

Two things dominate the hoards of this long period: neck-rings and coins. At Snettisham in Norfolk, at least 14 separate hoards of gold, silver and bronze torcs were buried on one hilltop, most of them around 60 BC; the largest single piece, the Great Torc, weighs 1,084 g. Across the Channel, the Grouville Hoard found in Jersey in 2012 packed 69,347 Celtic coins and several gold torcs into a single clay-bound block, the largest Iron Age coin hoard known. Coins had arrived, but people still stored wealth in the form of jewellery that could be worn, shown off and, when needed, weighed.

In the Greek world coinage was older and more settled. Athens, with its own silver mines, struck the tetradrachm of about 17.2 g, the most widely circulated coin of the Classical period and a regular find in hoards well beyond Greece. Prices give a sense of scale: at the end of the fifth century BC a skilled labourer in Athens earned about one drachma (roughly 4.3 g of silver) a day. Further north, Thracian rulers held their wealth as gold plate. The Panagyurishte Treasure, found by three brothers digging clay at a tile works in Bulgaria in 1949, is nine vessels of solid gold weighing about 6.1 kg, made around 300 BC. One dish is inscribed with its own weight in Greek drachmae and Persian darics, a reminder that fine plate was also bullion with a known value.

The debate over motive runs through the whole period. Panagyurishte has often been explained as treasure hidden during the invasions of the late fourth century BC. Elsewhere the setting points the other way. At Hallaton in Leicestershire, volunteers and archaeologists recovered more than 5,000 silver and gold coins and a silver-gilt Roman parade helmet from what excavators interpreted as an open-air hilltop shrine used around the time of the Roman conquest; 4,835 of the coins were struck by the local Corieltauvi. The Gundestrup cauldron, the largest piece of Iron Age silverwork in Europe, was found in 1891 in a Danish peat bog, taken apart, its decorated plates stacked inside the base. A bog is a strange choice of safe.

The record is uneven. Britain's is dense because of how finds are reported there: a survey published in 2018 listed over 3,260 Iron Age and Roman coin hoards from England and Wales alone, and most Iron Age examples hold tens or hundreds of gold or silver staters rather than thousands. Gold-rich deposits of the period also come from Thrace (modern Bulgaria), the Black Sea steppe and Ireland, while Denmark's bogs have yielded some of the strangest. The thread joining them is a slow shift from metal valued by weight and display towards metal counted as coin.