Where to Buy Ancient Roman Coins Safely

Short answer: buy from a specialist dealer or a specialist auction house with a written, unlimited authenticity guarantee, and pay a little more for it. The premium over a marketplace listing is the cost of someone competent having examined the coin first, and for a beginner it is the best money in the hobby.

Ancient coins are one of the few collecting fields where the seller's competence is part of what you are buying. A genuine coin and a good fake can look identical to a newcomer (Casey, 1986), and the difference between them is entirely a matter of who stands behind it. Everything below is about establishing that.

The four channels

The counter-intuitive point is that specialist auction prices are often lower than dealer retail while the risk stays low, because the houses that handle ancient coins seriously stake their reputation on their catalogues. The trade-off is that you bid without handling the coin and you pay the premium.

Vetting a seller in five minutes

• Trade body membership. Bodies such as the IAPN, the PNG, the ANA and the BNTA impose codes of conduct and give you a route to complain that a marketplace does not. Verify membership on the body's own site rather than trusting a logo.
• An unlimited authenticity guarantee, in writing. This is the single most important term. A reputable ancient-coin seller guarantees authenticity without time limit and will refund a coin proven to be a forgery whenever that happens. A 30-day guarantee is close to worthless, because forgery is usually detected long after that.
• A returns period on top. Typically 7 to 14 days for any reason, so you can inspect a coin in hand.
• Real attributions. Does the seller reference RIC (Mattingly et al., 1923–1994), RRC (Crawford, 1974), RPC (Burnett, Amandry and Ripollès, 1992) or Sear (Sear, 2000) numbers? Someone who catalogues properly has looked at the coin properly.
• Disclosure culture. Good sellers volunteer the negatives — smoothing, tooling, cleaning, edge marks, a scratch in the field (Grierson, 1975). A catalogue where every coin is flawless is a catalogue that is not telling you things.
• How long they have traded. Longevity in this field is a meaningful signal, because forgery problems eventually surface.
• Provenance on request. Ask what is known about the coin's history. A shrug on an inexpensive coin is normal; a shrug on a four-figure coin is not (UNESCO, 1970). See our guide to provenance and the law.

Red flags in a listing

• No weight or diameter. The most reliable single signal. Those two numbers are the first thing an honest seller records and the first thing a fake fails, as our authentication guide explains.
• Stock photography, or one photo of one side. You must see the actual coin, both sides, in focus.
• No attribution beyond "Ancient Roman Coin". Either the seller cannot identify it or prefers you could not.
• Marketing language instead of description. "Museum quality", "extremely rare", "investment grade", "as found". None of these are numismatic terms.
• Multiple identical coins. Ancient coins are individually struck and individually worn. Several examples in identical condition means one mould.
• Price far below comparable sold results. There is no undiscovered bargain in a market with public auction archives.
• Huge lots of "uncleaned" coins sold on the promise of a rare find. Discussed in our piece on cleaning ancient coins.
• A seller located in a source country shipping worldwide. A legal risk to you as importer, whatever the coin turns out to be.
• Certificates from unknown authorities. A certificate is worth exactly the reputation of whoever signed it. Anyone can print one.

What a good listing looks like

Notice how much of that is a disclosed fault. That is the mark of a seller you can work with.

Understanding the real cost

The headline price is never the price. At auction, budget hammer plus a premium of roughly 20–25 per cent, plus shipping, plus payment or currency fees, plus — for cross-border purchases — import VAT and a handling charge. A £100 hammer commonly lands at £125–140. Factor this in before bidding, not after.

How to spend a first budget well

1. Read before you buy. A weekend with a good general reference (Casey, 1986), the free index maintained by the American Numismatic Society (no date) and an auction archive will save you more than any single purchase.
2. Buy one good coin, not ten cheap ones. Around £80–200 from a reputable dealer gets you something properly attributed, guaranteed, and genuinely nice to own.
3. Pick a theme early. One emperor, one denomination, one reverse subject. A focused collection is more interesting to build and easier to sell.
4. Handle coins in person at a fair or a club before committing to anything expensive.
5. Keep records from day one. Invoice, photographs, weight, diameter, reference, price, date and source, for every coin. That archive is your provenance and, eventually, your executor's.

Do all of that and the risk in this hobby drops to something close to nil. The coins are abundant, the sellers who have been doing it for thirty years want you to come back, and a properly bought Roman coin is one of the very few genuinely ancient things an ordinary person can own outright.

Frequently asked questions

Is it safe to buy Roman coins on eBay?

It can be, but it is the highest-risk channel by a wide margin because anyone can list and fakes are abundant. If you buy there, restrict yourself to long-established sellers with thousands of feedback in ancient coins specifically, who publish weight and diameter, photograph the actual coin, cite a catalogue reference, and offer returns. Avoid anything described only as an ancient Roman coin with no attribution.

What should a good Roman coin listing include?

The ruler and date, the denomination, the mint, a catalogue reference such as a RIC number, the exact weight in grams and diameter in millimetres, sharp photographs of both sides of the actual coin at high resolution, an honest condition description that mentions any cleaning, smoothing or damage, and a clear statement of the authenticity guarantee and returns policy.

How much should I spend on my first Roman coin?

Rather more than instinct suggests. A budget of around 80 to 200 pounds buys a properly identified, attractive coin from a reputable dealer with a guarantee, and teaches you what quality looks like. The same money spread across a dozen cheap bronzes teaches very little and is much harder to sell on.

What is a buyer premium and how much is it?

It is the commission an auction house charges the buyer on top of the hammer price, commonly around 20 to 25 per cent, and there may be shipping, payment fees and import VAT on top. Always calculate the full delivered cost before bidding, because a 100 pound hammer typically becomes 125 to 140 pounds by the time the coin reaches you.

References

• American Numismatic Society (no date) Online Coins of the Roman Empire (OCRE). Available at: http://numismatics.org/ocre/ (Accessed: 26 August 2026).
• Burnett, A., Amandry, M. and Ripollès, P.P. (1992–) Roman Provincial Coinage. London: British Museum Press / Paris: Bibliothèque nationale de France.
• Casey, P.J. (1986) Understanding Ancient Coins: An Introduction for Archaeologists and Historians. London: Batsford.
• Crawford, M.H. (1974) Roman Republican Coinage. Cambridge: Cambridge University Press.
• Grierson, P. (1975) Numismatics. Oxford: Oxford University Press.
• Mattingly, H., Sydenham, E.A., Sutherland, C.H.V. and Carson, R.A.G. (eds.) (1923–1994) The Roman Imperial Coinage. 10 vols. London: Spink.
• Sear, D.R. (2000) Roman Coins and Their Values, Volume I: The Republic and the Twelve Caesars, 280 BC–AD 96. London: Spink.
• UNESCO (1970) Convention on the Means of Prohibiting and Preventing the Illicit Import, Export and Transfer of Ownership of Cultural Property. Paris: UNESCO.

Referencing follows the Harvard (author–date) system. Where figures are given as approximate ranges, they are drawn from the works above; published analyses differ by mint, issue and method, and market figures reflect prices observed at the date of writing.