The Grouville Treasure is a stockpile of approximately 70,000 late Iron Age and Roman coins reported in June 2012 they were discovered by metal searchers Reg Mead and Richard Miles in a field at an unknown location in the parish of Grouville on the east side of Jersey in the Channel Islands. It is the largest hoard ever found on Jersey and the first major archaeological find made by metal detectors on the island.
The hoard is believed to belong to the Curiosolitae tribe fleeing from the armies of Julius Caesar around 50-60 B.C.
Mead and Miles began searching for metals in the area where the cemetery was discovered in the early 1980s when they heard about a farmer who had discovered some silver coins in a clay pot a few years earlier while pulling a tree out of a hedge. However, because they did not know the exact location of the find, and because the current farm owner only allowed them to discover the metal once a year for 10-15 hours after harvest, it took about 30 years before they were able to find the treasure.
In early 2012, Mead and Miles initially found 60 silver and one gold coin from the Iron Age, possibly minted by the Curiosulite tribe in Saint-Malo, France. Meade and Miles' subsequent discovery of the area of the original find led to the discovery of a huge mass of Iron Age and Roman coins embedded in clay. The pair notified Jersey Heritage of the find , and in June 2012 archaeologists from Société Jersiaise and Jersey Heritage worked with Celtic coin expert Philip de Jersey to remove a clay mass of coins measuring 140 × 80 × 20 cm (55 × 31 × 8 inches) and weighing about 750 kg (1,650 pounds), which has since been sent to the Jersey Archives for cleaning and preservation.
Conservation and research on the treasure continues, and individual items have so far been recovered from the clay mass into which they were embedded. In addition to some 70,000 Celtic and Roman silver coins, the hoard contains gold torcs, silver bracelets, gold leaf, fine silver wire and several glass beads.
The treasure was part of an exhibition at the Jersey Museum that ran from May 26 to December 31, 2014. As of 2015, the treasure is on display at the La Hougue Bie Museum.
The legal situation regarding the coins is unclear, as the Treasure Act may no longer apply in Jersey, and there is no legal framework in Jersey for dealing with treasure finds such as the Treasure Act of 1996 in the United Kingdom. The discovery was reported to the Jersey General Manager.
The two finders and the landowner entered into an agreement to share the proceeds of the treasure and said they hoped the coins would eventually be displayed at the Jersey Museum or Jersey Archives.
Philip de Jersey , an expert on Celtic coins, suggested that the coins could be valued between £100 and £200 each, in which case the entire hoard could be worth between £7 and £14 million.