Blog

Every coin is a small object with a large story. This is where we explore both — the narrative history of ancient coinage across Greek, Roman, and Byzantine worlds; the reference guides that let you read any ancient coin with confidence; practical guidance on care and conservation; and honest advice for collectors navigating a market full of hype. Four topics, one thread: the coins that survived.

How to Identify and Treat Bronze Disease on Ancient Coins: A Collector’s Guide

It is the nightmare of every ancient coin collector: a fuzzy, bright green growth that doesn’t just sit on the surface, but slowly eats away at the metal itself. Unlike a stable, beautiful patina, Bronze Disease is a destructive chemical reaction that can turn a prized Roman sestertius into a pile of dust if left untreated.

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Power and Profit: A History of Roman Coin Denominations

From the gleaming gold Aureus to the common bronze Follis, the coinage of the Roman Empire tells a fascinating story of economic power, cultural unity, and eventual debasement. Navigating the diverse denominations—Aurei, Denarii, Sestertii, and more—can be a technical challenge for new collectors and history buffs alike. This comprehensive guide breaks down the essential metals (AV, AR, and AE), identifies the key visual markers like the radiate crown, and explains how the Roman monetary system evolved through centuries of prosperity and crisis.

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Coin cleaning setup with electrolysis equipment

Electrolysis on Ancient Coins: Should You Actually Do It?

Electrolysis is the fastest way to strip crust and corrosion from a heavily-encrusted ancient coin — minutes instead of months. But most professional conservators advise against it, and for reasons that go beyond “it removes the patina.” Here’s what electrolysis actually does to an ancient coin, why silver coins and any piece with good patina should never go near it, and what the safer alternatives are when you have a genuine “uncleanable” on your hands.

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Unearthing the Past: The Thrilling Quest of Cleaning Ancient Coins

Imagine holding a “pebble” of dirt and realize that beneath that crust lies the face of a Roman Emperor who ruled seventeen centuries ago. Welcome to the addictive, hands-on world of uncleaned ancient coins—the only hobby where you get to be a digital archaeologist from the comfort of your own home. These coins, lost in the mud of the 4th Century A.D. by Roman peasants and soldiers alike, offer a unique window into a world of “Barbarian” invasions and the rise of Christianity. In this comprehensive guide, we move beyond the basics of preservation to the thrill of the “reveal.” Learn how to identify common Roman reverse types like the “Camp Gate,” discover the professional secrets of olive oil soaks and thermal shock, and find out why patience is the most important tool in your restoration kit. It’s time to stop just collecting history and start unearthing it for yourself.

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Roman coin on wooden table

So You Found a Roman Coin: How Much Is It Worth?

You found a Roman coin — maybe in an old drawer, at a flea market, or in your garden. Now you want to know what it’s worth. The honest answer is probably less than you hoped, and that’s actually fine. Most ancient Roman coins sell for $10 to $50 because millions still exist. Here’s a realistic guide to what drives value and how to buy or sell without getting misled by “RARE!” hype.

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Coins displayed: struck vs. cast fakes

Is Your Ancient Coin a Fake? The Ultimate Guide to Spotting Cast vs. Struck

Is your piece of history a genuine relic or a modern deception? For many collectors, the fear of buying a forgery is the biggest barrier to entry in the numismatic world. In this deep dive, we pull back the curtain on the forger’s craft to show you exactly how to identify the “tell-tale” signs of a fake. From the incriminating raised “casting seams” hidden along the edge of a coin to the “mushy” details and suspicious plating often found on modern casts, we teach you the three essential skills every collector needs to master. Learn why a simple digital scale is your most powerful defensive tool and how to distinguish the natural wear of a 2,000-year-old Roman silver denarius from the artificial aging of a fraudulent copy. Don’t just buy a coin—buy the knowledge to protect your collection.

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Various Roman coins on wooden table

The Roman Coin Denominations: A Timeline of Unity and Inflation

From the silver Denarius of the Republic to the bronze Folles of the late Empire, every Roman coin tells a technical story of economic unity and inevitable debasement. This guide explores the intersection of law and metallurgy, helping collectors identify the subtle details—from radiate crowns to the 4th-century AE scale—that define the evolution of the Mediterranean’s most iconic currency.

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More Than Metal: Why Provenance is the Soul of Your Ancient Coin

Is your coin a legendary relic or a mystery metal? In the high-stakes world of ancient numismatics, a “paper trail” is worth its weight in gold. Don’t leave your collection to chance; use our 6-point Provenance Checklist to verify authenticity, track famous past owners, and ensure your investment is legally ironclad. From identifying “cabinet tone” to matching auction plates, learn how to separate a coin with a soul from a modern imitation.

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Preserving the Past: The Ultimate Guide to Storing Your Ancient Greek and Roman Coins

Preserving the “historical soul” of your collection requires more than just a locked drawer; it requires a proactive defense against chemical decay and environmental damage. From the silent threat of PVC-leaching plastics to the destructive creep of “Bronze Disease,” ancient Greek and Roman coins face modern enemies their creators never envisioned. This comprehensive preservation guide and checklist provides a roadmap for the responsible steward, detailing the essential archival-safe materials, the science of humidity control, and the professional “edge-only” handling techniques that ensure your relics survive for another two millennia. Learn why the right mahogany cabinet or a simple silica packet can be the difference between a pristine artifact and a pile of green powder.

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Rarity vs. Value: Decoding The Ancient Numismatic Riddle for Collectors

In modern coin collecting, rarity is simple: low supply and high demand dictate the price. But with ancient coins, it’s a completely different puzzle. Understanding the real context of ancient numismatics is crucial for building a rewarding collection and avoiding common pitfalls. Our latest guide, The Rarity Myth: Deciphering Value in Ancient Coins, breaks down the two crucial components—The Final Grade and Surface & Strike Quality—to help you distinguish between true scarcity and market hype.

Discover how manual minting created unique coins and why a simple Sheldon scale score often fails to capture an ancient coin’s true character.

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