The Treasure Act and Coin Finds: Your Legal Obligations

A Find That Changes Everything

Picture this. You are out on a cold November morning in a ploughed field in Lincolnshire, your metal detector swinging in slow arcs across the dark earth. The machine screams. You dig carefully, fingers cold and caked in soil, and pull out a small, heavy disc. You rub it on your sleeve. Gold. Roman. Undeniably old. Your heart is hammering. This is the moment every detectorist dreams about.

Now what do you actually do?

This is where a great many beginners go wrong — not out of dishonesty, but out of simple ignorance. The law surrounding coin finds in the United Kingdom is more specific, more nuanced, and frankly more interesting than most people realise. Understanding it is not just a legal obligation. It is part of what it means to be a responsible, respected member of the detecting and collecting community. And if you get it wrong, the consequences can be severe: an unlimited fine, up to three months in prison, and the permanent loss of any object you found.

So let us walk through it properly, from the beginning.

What Is the Treasure Act 1996?

Before 1996, England and Wales operated under the ancient common law concept of Treasure Trove. This doctrine, stretching back to medieval times, ruled that objects made of gold or silver that had been deliberately hidden with the intention of recovery — and whose owner could not be found — belonged to the Crown. The problem was that “intention of recovery” was almost impossible to prove with any certainty. Court cases were messy, inconsistent, and frustrating for everyone involved.

The Treasure Act 1996 replaced all of that with a cleaner, statutory framework. It applies in England, Wales, and Northern Ireland. Scotland operates under its own distinct system called Scots Law and the principle of bona vacantia, which treats all ownerless property rather differently — something worth knowing if you are planning to detect north of the border.

Under the 1996 Act and its subsequent amendments, certain finds are legally defined as “Treasure” and must be reported. The definition has been expanded over the years, most significantly by the Treasure (Designation) Order 2002, and further updates have been proposed more recently to widen the scope of what qualifies.

What Counts as Treasure?

This is the section you really need to read carefully, because the rules are specific. A find qualifies as Treasure under the Act if it meets one of the following criteria:

Any metallic object — other than a coin — that is at least 300 years old and contains at least 10% precious metal (gold or silver) by weight.
Any group of two or more coins that are at least 300 years old and contain at least 10% precious metal. This means a single ancient silver coin does not automatically qualify on its own — though there are exceptions.
Any group of ten or more coins that are at least 300 years old, regardless of metal content. So a hoard of ten or more base-metal Roman coins would still be Treasure.
Any object, regardless of age or composition, found in association with an item that is itself Treasure.
Any prehistoric metalwork, regardless of precious metal content. “Prehistoric” means anything from before the Roman occupation — so Bronze Age and Iron Age coins such as Celtic staters fall under this category even if they contain no gold or silver at all.

It is worth noting that the word “hoard” carries weight here. Two coins found in the same spot on the same day could together constitute Treasure where a single coin would not. Context matters enormously, both legally and archaeologically.

The Reporting Obligation: What You Must Do

If you find something that you believe — or even suspect — might be Treasure, the law is clear. You must report it. You have fourteen days from the date of discovery, or fourteen days from the date you realised the find might be Treasure, whichever comes later. Failing to report is a criminal offence under Section 8 of the Act.

Here is a straightforward process to follow when you make a potential Treasure find:

Stop digging immediately around the find. Do not disturb the surrounding soil any more than you already have. The archaeological context — the exact position, depth, and association of objects — is often as valuable to historians as the objects themselves.
Record everything you can on the spot. Take photographs before you lift anything. Note the GPS coordinates or the precise location on a map. Write down the depth, the soil type, and anything else nearby that might be significant.
Handle the object as little as possible. Do not clean it. Do not scrub it with a toothbrush. Resist the urge. Conservation specialists can extract information from surface deposits that looks like dirt to the untrained eye.
Contact your local Finds Liaison Officer (FLO). The Portable Antiquities Scheme (PAS) maintains a network of FLOs across England and Wales, employed by local museums and authorities. Your local FLO is your first and most important point of contact. You can find yours through the PAS website at finds.org.uk.
Report formally to the local coroner. This is the legal requirement. The FLO can help you with this process, and in practice they often handle much of the liaison work on your behalf. Do not let the word “coroner” alarm you — this is simply the designated authority for Treasure reports, a historical quirk of how the system was structured.
Keep the find safe and available for examination. The coroner will arrange for the find to be assessed, usually by a local or national museum. This process can take several months, so patience is essential.
Attend the inquest if required. A coroner’s inquest will formally determine whether the find constitutes Treasure. In straightforward cases this is often a paper exercise, but for significant finds it may involve a formal hearing.

What Happens After You Report?

Once a find is officially declared Treasure, the Crown (in practice, usually a museum) has the option to acquire it. If a museum — perhaps the British Museum in London, or a local institution like the Yorkshire Museum in York or the Tullie House Museum in Carlisle — wishes to acquire the object, it pays a reward. This reward is assessed by an independent body called the Treasure Valuation Committee, which sets a fair market value.

That reward is then split between the finder and the landowner according to whatever agreement they had in place before the find was made. This is why, before you ever put a spade in the ground, you should have a written agreement with the landowner clearly stating how any Treasure reward will be divided. Many detectorists operate on a 50/50 split, though the exact arrangement is a private matter between the two parties.

If no museum wishes to acquire the find within a set period, the Treasure is disclaimed and ownership can pass back to the finder and landowner. This is relatively uncommon for genuinely significant finds, but it does happen.

The entire process — from report to resolution — can take anywhere from several months to a couple of years for complex cases. During the millennium-coin hoard found near Lenborough in Buckinghamshire in 2014, for instance, the process of documentation, conservation, and acquisition negotiations took considerable time. Cases like that illustrate why the system is what it is: these objects deserve care, and care takes time.

The Portable Antiquities Scheme: Your Best Friend

Even when a find does not meet the legal definition of Treasure, you are strongly encouraged — though not legally required — to record it with the Portable Antiquities Scheme. The PAS database is a genuinely extraordinary resource, containing millions of recorded finds from across England and Wales. Every single entry helps build a richer picture of Britain’s past.

Your local FLO can help you record finds correctly, identify coins you cannot place yourself, and advise on whether something might have Treasure implications you had not considered. They are, in the experience of almost every detectorist who uses them regularly, unfailingly helpful and knowledgeable. Building a good working relationship with your FLO is one of the best investments you can make as a new detectorist or collector.

There is also a practical selfish reason to record your non-Treasure finds: it builds your credibility. A detectorist with a strong recording history is taken more seriously by landowners, by local archaeological societies, and by the broader community. It demonstrates that you are in this for the history, not just the gold.

Buying and Selling: Coins That Pass Through the Market

Perhaps you are not a detectorist at all. Perhaps you collect coins through dealers, at auction, or from fellow collectors. You might reasonably wonder how the Treasure Act affects you. The honest answer is: probably not directly, but the provenance question still matters.

Reputable British coin dealers — members of the British Numismatic Trade Association (BNTA), for example — will be able to tell you when and where a coin entered the market. For older collection pieces and coins with a documented history before 1970 (the date used internationally as a benchmark for the UNESCO Convention on Cultural Property), provenance is generally clear. For more recently surfaced material, it is worth asking questions.

Buying coins that were illegally withheld from the Treasure process is not something you can be prosecuted for simply by being an unknowing purchaser — but it is something the reputable collecting community takes seriously. The market for undeclared Treasure finds funds exactly the kind of destructive, unrecorded detecting that gives the entire hobby a bad name.

When buying ancient coins in particular, consider using established auction houses with strong reputations: Dix Noonan Webb in London, for instance, or Morton and Eden. Both maintain rigorous standards around provenance documentation. For modern British coins, the Royal Mint Museum’s own resources and dealers accredited by the BNTA are reliable starting

The British Numismatic Trade Association’s code of ethics requires member dealers to take reasonable steps to verify that items offered for sale have not been illegally excavated or exported. When purchasing from a BNTA-accredited dealer, ask directly for any available provenance documentation — previous auction catalogue entries, old collection labels, or written statements from the vendor about the item’s history. A dealer who is dismissive of such enquiries is worth avoiding. None of this guarantees a clean chain of ownership stretching back centuries, but it demonstrates due diligence on your part and discourages the laundering of undeclared finds through the legitimate market.

It is also worth familiarising yourself with the Portable Antiquities Scheme database at finds.org.uk, which records lawfully reported finds across England and Wales. If a coin you are considering purchasing bears a PAS reference number, that is a strong indicator of legitimate discovery and proper reporting. The database is searchable by object type, material, and find location, making it a genuinely useful research tool quite apart from its provenance verification function. Scotland operates under separate legislation — the Treasure Trove system administered by the Crown — and equivalent records are maintained by Treasure Trove Unit Scotland.

Conclusion

The Treasure Act 1996 and the reporting framework surrounding it exist not to obstruct collectors but to ensure that objects of historical significance are recorded, studied, and where appropriate preserved in public collections. For the vast majority of finders and collectors, compliance is straightforward: report promptly, cooperate with the local finds liaison officer, and keep clear records of how you acquired what you own. The law asks relatively little, and the hobby gains considerably in public credibility when its participants are seen to take their obligations seriously. A well-documented collection, honestly assembled, is a more satisfying thing to own — and a more straightforward one to pass on.