Collector's Reference Guide Ancient Coin
Denominations Roman and Greek coins explained in plain English. These names are modern classification tools, not what ancient people used at market.
Roman Bronze AE1 to AE4 — Size, not value AE comes from the Latin aes, meaning bronze. The numbers 1 to 4 describe diameter only. They are modern collector categories, not ancient denominations.
Comparison chart of late Roman AE coin sizes at actual scale. AE1 = 27mm, AE2 = 23mm, AE3 = 19mm, AE4 = 15mm.
AE127 mm
Thick, impressive late Roman coins. Less common than smaller issues — a statement piece in any collection.
AE223 mm
Popular Constantinian and Late Roman issues. Strong visual presence with excellent detail retention.
AE319 mm
One of the most common ancient Roman coins. Ideal starting point — affordable, authentic, and widely available.
Best for first-time collectors
AE415 mm
Late Roman issues. Smaller but fully authentic — remarkable that so much history fits in so little space.
Remember: AE1 to AE4 are modern collector categories. No Roman soldier ever asked for an AE3. These labels help us organize and compare — nothing more.
Roman Silver Denarius and Antoninianus The two coins that defined Roman silver coinage for over three centuries — each instantly recognizable once you know what to look for.
Denarius~18.5 mm
The most famous Roman silver coin. Used for everyday transactions across centuries of empire. When people picture a Roman silver coin — this is it. Laureate portrait on the obverse.
The coin of Caesar, soldiers, and merchants alike
Antoninianus~22 mm
Introduced in the 3rd century AD. Originally silver, later silver-alloy or bronze as the economy strained. Key identifier: the emperor wears a radiate crown — a sunburst of spikes.
ANT is a catalog shorthand, not an ancient name
Comparison chart of Roman silver coin sizes. Denarius = 18.5mm. Antoninianus = 22.0mm.
How to tell them apart instantly: Radiate crown = Antoninianus. Laurel wreath = Denarius.
Greek Silver Weight-based denominations Greek coins are named by weight, not purchasing power. A Tetradrachm weighs four times a Drachm — the name is literally a weight relationship.
Chart showing true sizes of Greek silver coin denominations including Tetradrachm, Didrachm, Drachm, Obol and smaller fractional coins.
Tetradrachm4x drachm
The most famous Greek silver coin. Heavy, impressive, and widely used in international trade. Athens' Owl Tetradrachm was the dollar of the ancient Mediterranean.
DrachmStandard
The everyday silver coin across Greek city-states. A skilled craftsman earned roughly one drachm per day.
Didrachm2x drachm
Double drachm. Larger than a Drachm, smaller than a Tetradrachm. Common in early Roman coinage and certain Greek regions.
Obol / HemiobolFractional
Tiny silver coins for small daily transactions. The Widow's Mite in the Gospel of Mark is an obol-class coin — worth little, yet given completely.
Key principle: Greek denomination names describe weight relationships, not spending power. What a coin bought depended on time, region, and economy — not its name.
The Kinzer Coins Approach Why you will not see AE3 in our titles We prioritize clarity and trust. All technical details live in the Specifications section — not the headline.
What you will see
Ancient Roman Bronze Coin of Emperor Constantine I
Ancient Greek Silver Coin from Athens
Biblical Coin from the Time of Jesus
What you will not see
AE3 Reduced Follis, Trier Mint
AR Tetradrachm, circa 440 BC
ANT Rome Mint, Radiate, VF+
Authentic and individually unique
Historically significant
Fully documented with specifications
A real object from the ancient world
You are not buying a label.
You are holding history. You do not need to understand every denomination to start collecting.
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